LifeWiki - User contributions [en]

User talk:Sokwe

2014-04-04T17:37:23Z

JWatCCI: /* Administrator assistance */ new section

==Welcome!==
Hi there, and welcome to LifeWiki! In answer to your question on my talk page, some of the LifeWiki conventions are described on the [[LifeWiki:Style guide]] page, and in particular the "pattern names should be in lowercase" thing is described at [[LifeWiki:Spelling]]. LifeWiki is still very new though so a lot of conventions and whatnot haven't been formally written down, and unfortunately the LifeWiki procedures and guidelines pages are still a bit of a mess. My best advice right now is to just use your best judgment and you'll pick it up in no time. The guidelines are by no means set it stone, and if you have recommendations for what guidelines ''should'' be, then you're of course more than welcome to suggest them.

Also, thanks for your contributions to the [[spaceship]] article, it's already looking a ''lot'' better. I have plans to do something similar with the [[oscillator]] article as well, as it's a bit of a mess right now. [[User:Nathaniel|Nathaniel]] 18:55, 18 April 2009 (UTC)

== Silver's ==

Hi Sokwe, as you seem to create redirs, you may find every Silver list's [[red link]] on my home page User:Methodood/sandbox1. --[[User:Methodood|Methodood]] 06:50, 16 December 2009 (UTC)
:Thanks, a lot of the Lexicon's pages could be made to redirects. I'll look into it tomorrow. ~Sokwe 06:55, 16 December 2009 (UTC)

== p60 glider shuttle ==

When you mention the p60 glider shuttle on your userpage, are you referring to a shuttle creating gliders or simply a glider bouncing back and forth? If you mean the former, could I have the pattern? I am trying to make a p60 LWSS gun for the [[Star gate]], and I plan on using glider synthesis to create the LWSSes. Thanks, [[User:The last username left|The last username left]] 04:44, 29 December 2009 (UTC)
:Never mind, I just realised that Star gate contains a p60 gun. I'll catalogue it. [[User:The last username left|The last username left]] 23:53, 29 December 2009 (UTC)

== User Merge and Delete ==

You now have the ability to use the "User Merge and Delete" tool -- it can be found at [[Special:SpecialPages]]. [[User:Nathaniel|Nathaniel]] 11:39, 25 May 2011 (CDT)

== Question about [[Oscillator]] page maintenance ==

Hello Sokwe. I'm new to this wiki and have a few questions regarding some recent edits/revisions that you made. The criteria for which oscillators may be listed on the "smallest oscillator" table seems arbitrary and inconsistent. Recently I noticed that [[48P31]] could interact non-trivially with many oscillators, which I am now aware that many of these interactions were likely noticed by many individuals prior to me. I decided to replace P124 lumps of muck hassler on the smallest oscillator table with the much smaller [[T-nosed p4 on 48P31]], which quickly lead to you deleting the entry for P124 entirely. I also added a few other oscillators of various periods which where also deleted from the table. My question is as follows: What oscillators should and shouldn't be listed in this particular table. The LifeWiki notability guidelines state that a pattern is considered notable if "It currently holds, or at one point held, a record of some kind." which i believe these patterns do (or at least improved upon the entries currently listed in the table). To avoid repetitive edits and reversions of this table can you clearly state what oscillators, periods, and types of oscillator interactions meet the notability guidelines. I appreciate your patience in answering my questions. [[User:Jsorr|Jsorr]] 14:06, 17 September 2011 (CDT)
:I deleted the the p124 oscillator from the list because it is not the smallest known non-trivial period-124 oscillator. As I mentioned at [[Talk:T-nosed_p4_on_48P31]], there are smaller sparkers that can interact with the p31 oscillator. Here are the smallest known non-trivial oscillators with periods of 31n for 2<n<7:
x = 134, y = 27, rule = B3/S23
7b2obo2bob2o27b2obo2bob2o25b2obo2bob2o28b2obo2bob2o$2o4bo2bo4bo2bo4b2o
13b2o4bo2bo4bo2bo4b2o11b2o4bo2bo4bo2bo4b2o14b2o4bo2bo4bo2bo4b2o$2o5bob
o4bobo5b2o13b2o5bobo4bobo5b2o11b2o5bobo4bobo5b2o14b2o5bobo4bobo5b2o$8b
o6bo29bo6bo27bo6bo30bo6bo6$8bo6bo29bo6bo27bo6bo30bo6bo$2o5bobo4bobo5b
2o13b2o5bobo4bobo5b2o11b2o5bobo4bobo5b2o14b2o5bobo4bobo5b2o$2o4bo2bo4b
o2bo4b2o13b2o4bo2bo4bo2bo4b2o11b2o4bo2bo4bo2bo4b2o14b2o4bo2bo4bo2bo4b
2o$7b2obo2bob2o27b2obo2bob2o25b2obo2bob2o28b2obo2bob2o6$45bo34b2o$9b3o
32bob2o31bo2bo33b2o$13bo34bo29bo4bo34bob2o$8bo4bo30bo2bobo27bo6bo29bo
2bo2b2o$12bo33bo2bo27bo6bo29bobo$9b2o36b2o29bo4bo31bo$9bo69bo2bo$9bo
70b2o33b2o$9bo105b2o!
:I did not add these patterns to the list because I had no intention of adding their pages at this time. Also, the p124 lumps of muck hassler also should not have been on the list (this was probably my fault, as I included this in my post at [[Talk:Oscillator]]). Unfortunately, there are still a few errors in the list which I have yet to correct. ~[[User:Sokwe|Sokwe]] 15:38, 17 September 2011 (CDT)

== Administrator assistance ==

There's a pile of spam pages to delete... [[User:JWatCCI|JWatCCI]] 17:37, 4 April 2014 (UTC)

Broken lines

2014-03-27T21:50:04Z

JWatCCI:

{{Pattern
|name=Broken lines
|pname=brokenlines
|discoverer=Dean Hickerson
|discoveryear=2005
}}

This pattern produces a broken line of gliders heading southwest, produced by the collision of two lines of [[LWSS]]s (which also produce a broken line going northeast). The two input lines have themselves been broken by lines of gliders, one directly produced by a [[rake]], the other produced by the collision of the northeast line of gliders colliding with the rake's line. This collision also intermittently produces additional gliders, which wander off to the southwest, eventually impacting one of the lines of [[LWSS]]s.

The open question is whether the pattern eventually breaks, as the additional gliders may crash into the stationary gun, destroying it. Dean did not observe this in 535,000 generations, but he suspects the failures may be "exponentially sparse" so it might be billions of generations before one is observed.

The pattern has now been tested to over 474 million generations, without a failure observed.

Broken lines

2014-03-27T21:31:35Z

JWatCCI: update to 474 million

{{Pattern
|name=Broken lines
|pname=brokenlines
|discoverer=Dean Hickerson
|discoveryear=2005
}}

This pattern produces a broken line of gliders heading southwest, produced by the collision of two lines of [[LWSS]]s (which also produce a broken line going northeast). The two input lines have themselves been broken by lines of gliders, one directly produced by a rake, the other produced by the collision of the northeast line of gliders colliding with the rake's line. This collision also intermittently produces additional gliders, which wander off to the southwest, eventually impacting one of the lines of [[LWSS]]s.

The open question is whether the pattern eventually breaks, as the additional gliders may crash into the stationary gun, destroying it. Dean did not observe this in 535,000 generations, but he suspects the failures may be "exponentially sparse" so it might be billions of generations before one is observed.

The pattern has now been tested to over 474 million generations, without a failure observed.

Broken lines

2014-03-27T20:19:36Z

JWatCCI:

{{Pattern
|name=Broken lines
|pname=brokenlines
|discoverer=Dean Hickerson
|discoveryear=2005
}}

This pattern produces a broken line of gliders heading southwest, produced by the collision of two lines of [[LWSS]]s (which also produce a broken line going northeast). The two input lines have themselves been broken by lines of gliders, one directly produced by a rake, the other produced by the collision of the northeast line of gliders colliding with the rake's line. This collision also intermittently produces additional gliders, which wander off to the southwest, eventually impacting one of the lines of [[LWSS]]s.

The open question is whether the pattern eventually breaks, as the additional gliders may crash into the stationary gun, destroying it. Dean did not observe this in 535,000 generations, but he suspects the failures may be "exponentially sparse" so it might be billions of generations before one is observed.

The pattern has now been tested to over 400 million generations, without a failure observed.

Broken lines

2014-03-27T19:02:59Z

JWatCCI: wheee, Golly is quick -- 77 million generations now

{{Pattern
|name=Broken lines
|pname=brokenlines
|discoverer=Dean Hickerson
|discoveryear=2005
}}

This pattern produces a broken line of gliders heading southwest, produced by the collision of two lines of [[LWSS]]s (which also produce a broken line going northeast). The two input lines have themselves been broken by lines of gliders, one directly produced by a rake, the other produced by the collision of the northeast line of gliders colliding with the rake's line. This collision also intermittently produces additional gliders, which wander off to the southwest, eventually impacting one of the lines of [[LWSS]]s.

The open question is whether the pattern eventually breaks, as the additional gliders may crash into the stationary gun, destroying it. Dean did not observe this in 535,000 generations, but he suspects the failures may be "exponentially sparse" so it might be billions of generations before one is observed.

The pattern has now been tested to over 77 million generations, without a failure observed.

Broken lines

2014-03-27T18:57:01Z

JWatCCI: add note that I've now run the pattern to over 2 million generations without observing a failure

{{Pattern
|name=Broken lines
|pname=brokenlines
|discoverer=Dean Hickerson
|discoveryear=2005
}}

This pattern produces a broken line of gliders heading southwest, produced by the collision of two lines of [[LWSS]]s (which also produce a broken line going northeast). The two input lines have themselves been broken by lines of gliders, one directly produced by a rake, the other produced by the collision of the northeast line of gliders colliding with the rake's line. This collision also intermittently produces additional gliders, which wander off to the southwest, eventually impacting one of the lines of [[LWSS]]s.

The open question is whether the pattern eventually breaks, as the additional gliders may crash into the stationary gun, destroying it. Dean did not observe this in 535,000 generations, but he suspects the failures may be "exponentially sparse" so it might be billions of generations before one is observed.

The pattern has now been tested to over 2 million generations, without a failure observed.

Broken lines

2014-03-27T18:56:00Z

JWatCCI: add documentation of a pattern included with Golly, called broken-lines.mc

{{Pattern
|name=Broken lines
|pname=brokenlines
|discoverer=Dean Hickerson
|discoveryear=2005
}}

This pattern produces a broken line of gliders heading southwest, produced by the collision of two lines of [[LWSS]]s (which also produce a broken line going northeast). The two input lines have themselves been broken by lines of gliders, one directly produced by a rake, the other produced by the collision of the northeast line of gliders colliding with the rake's line. This collision also intermittently produces additional gliders, which wander off to the southwest, eventually impacting one of the lines of [[LWSS]]s.

The open question is whether the pattern eventually breaks, as the additional gliders may crash into the stationary gun, destroying it. Dean did not observe this in 535,000 generations, but he suspects the failures may be "exponentially sparse" so it might be billions of generations before one is observed.

John Conway

2014-03-27T18:01:16Z

JWatCCI: it looks like you copied this from Wikipedia. You need to cite that, if so, and probably not copy it wholesale, in any case. reverting.

{{Person|image=true|name=John Conway|born=December 26, 1937|res=United States|nat=British|inst=Princeton University|alma=University of Cambridge}}
'''John Horton Conway''' (born December 26, 1937, Liverpool, England) is a prolific mathematician active in the theory of finite groups, knot theory, number theory, combinatorial game theory and coding theory. He has also contributed to many branches of recreational mathematics, notably the invention of [[Conway's Game of Life|the Game of Life]], and was the leader of the [[JHC group]].

Conway is currently professor of mathematics at Princeton University. He studied at Cambridge, where he started research under Harold Davenport. He has an Erdős number of one. He received the Berwick Prize (1971), was elected a Fellow of the Royal Society (1981), and was the first recipient of the Pólya Prize (LMS) (1987).

==Biography==
Conway's parents were Agnes Boyce and Cyril Horton Conway. John had two older sisters, Sylvia and Joan. Cyril Conway was a chemistry laboratory assistant. John became interested in mathematics at a very early age and his mother Agnes recalled that he could recite the powers of two when aged four years. John's young years were difficult for he grew up in Britain at a time of wartime shortages. At primary school John was outstanding and he topped almost every class. At the age of eleven his ambition was to become a mathematician.

After leaving secondary school, Conway entered Gonville and Caius College, Cambridge to study mathematics. He was awarded his BA in 1959 and began to undertake research in number theory supervised by Harold Davenport. Having solved the open problem posed by Davenport on writing numbers as the sums of fifth powers, Conway began to become interested in infinite ordinals. It appears that his interest in games began during his years studying at Cambridge, where he became an avid backgammon player spending hours playing the game in the common room. He was awarded his doctorate in 1964 and was appointed as Lecturer in Study at the University of Cambridge. He left Cambridge in 1986 to take up the appointment to the John von Neumann Chair of Mathematics at Princeton University.

Conway resides in Princeton, New Jersey, United States with his wife and youngest son. He has six other children from his two previous marriages, three grandchildren, and two great-grandchildren.

==Contributions to Life==
Conway is the inventor of [[Conway's Game of Life]], one of the earliest-studied and most well-known examples of a [[cellular automaton]]. He discovered many of its most fundamental and important patterns, including [[blinker]], [[block]], [[lightweight spaceship]], [[pulsar]], and [[R-pentomino]]. He was the first person to enumerate all [[still life]]s with 7 or fewer [[cell]]s.

==Books==
He has (co-)written several books, including ''[[Winning Ways for Your Mathematical Plays]]'' with [[Richard K. Guy]] and [[Elwyn Berlekamp]].

{{PatternsFoundBy|name=John Conway}}

==References==
*{{cite web|url=http://home.interserv.com/~mniemiec/lifecred.htm#conway|publisher=Mark D. Niemiec |title=Life Credits |accessdate=May 5, 2009}}
*[http://www.royalsoc.ac.uk/page.asp?id=1727 List of Royal Society Fellows]
*[http://www.lms.ac.uk/activities/prizes_com/pastwinners.html#berwick LMS Prizewinners]

==External links==
* Charles Seife, [http://www.users.cloud9.net/~cgseife/conway.html "Impressions of Conway"], The Sciences
* Mark Alpert, "Not Just Fun and Games", ''Scientific American'' April 1999. ([http://www.sciam.com/article.cfm?articleID=0000FFD8-61FF-1C70-84A9809EC588EF21&catID=2 official online version]; [http://www.cpdee.ufmg.br/~seixas/PaginaATR/Download/DownloadFiles/NotJustFunAndGames.PDF registration-free online version])
*[http://en.wikipedia.org/wiki/John_Horton_Conway John Horton Conway] at Wikipedia

{{DEFAULTSORT:Conway, John}}

User talk:Codeholic

2014-03-19T18:37:09Z

JWatCCI: Created page with "==Administrator attention== If you have an account at the forums, it might be worth pinging our two administrators, User:Nathaniel and/or User:Sokwe as there are a bunch ..."

==Administrator attention==
If you have an account at the forums, it might be worth pinging our two administrators, [[User:Nathaniel]] and/or [[User:Sokwe]] as there are a bunch of spam pages to delete. I'd do it myself, but I haven't (yet) signed up on the forum... [[User:JWatCCI|JWatCCI]] 18:37, 19 March 2014 (UTC)

LFoD

2014-03-13T20:42:42Z

JWatCCI: Redirected page to Live free or die

#Redirect [[Live free or die]]

MWSS out of the blue

2014-03-13T20:37:12Z

JWatCCI:

{{Glossary}}
A reaction, found by [[Peter Rott]] in November 1997, in which a [[LWSS]] passing by a p46 [[oscillator]] creates a [[MWSS]] travelling in the opposite direction. Together with some reactions found by [[Dieter Leithner]], and a LWSS-turning reaction which Rott had found in November 1993 (but which was not widely known until [[Paul Callahan]] rediscovered it in June 1994) this can be used to prove that there exist gliderless guns for [[LWSS]], [[MWSS]] and [[HWSS]] for every [[period]] that is a multiple of 46.

See http://www.argentum.freeserve.co.uk/lex_m.htm#mwssoutoftheblue

MIT group

2014-03-13T20:36:57Z

JWatCCI:

The '''MIT group''' is a group of people at the Massachusetts Institute of Technology who studied [[Conway's Game of Life]] in the early 1970s. Members of the group include Robert April, [[Michael Beeler]], [[Bill Gosper]], Richard Howell, Rici Liknaitzky, Bill Mann, [[Rich Schroeppel]], and Michael Speciner.

==Patterns found by the MIT group==
{{#dpl:category=Patterns found by MIT group|mode=category}}

==References==
* {{CiteHickersonOscillators}}

[[Category:People]]

Line puffer

2014-03-13T20:36:44Z

JWatCCI:

{{Glossary}}
A [[puffer]] which produces its output by means of an orthogonal line of cells at right angles to the direction of travel. The archetypal line puffer was found by Alan Hensel in March 1994, based on a [[spaceship]] found earlier that month by Hartmut Holzwart. The following month Holzwart found a way to make extensible c/2 line puffers, and Hensel found a much smaller stabilization the following day. But in October 1995 Tim Coe discovered that for large widths these were often unstable, although typically lasting millions of generations. In May 1996, however, Coe found a way to fix the instability. The resulting puffers appear to be completely stable and to exhibit an exponential increase in period as a function of width, although neither of these things has been proved.

Line puffers have enabled the construction of various difficult periods for c/2 spaceships and puffers, including occasionally periods which are not multiples of 4 and which would therefore be impossible to attain with the usual type of construction based on standard spaceships. (See [[frothing puffer]] for another method of constructing such periods.) In particular, the first c/2 rake with period not divisible by 4 was achieved in January 2000 when David Bell constructed a p42 [[backrake]] by means of line puffers.

See http://www.argentum.freeserve.co.uk/lex.htm

Lifeline/project

2014-03-13T20:36:26Z

JWatCCI:

== Project ==

*As stated in [[http://conwaylife.com/forums/viewtopic.php?f=7&t=139#p1821 ConwayLife forums]] :
Lifeline #5 is on the way. The process might be shortened with a project where contributors register themselves for limited tasks and publish every step on this subpage :
*scan a magazine issue
*OCR and check text
*create images
*check work, create links and edit wiki page

== Issues status ==

{| class="wikitable" style="text-align:center"
! issue !! scan !! OCR !! check_text !! images !! links_check_all !! summary !! collate
|-
|| 1 ||X||X||X||X||X||X|| |
|-
|| 2 ||X||X||X||X||X||X|| |
|-
|| 3 ||X||X||X||X||X||X|| |
|-
|| 4 ||X||X||X||X||X||X|| |
|-
|| 5 ||X||X||X|| x ||x|| || |
|-
|| 6 ||X||X|| || || || || |
|-
|| 7 ||X|| || || || || || |
|-
|| 8 ||X|| || || || || || |
|-
|| 9 ||X|| || || || || || |
|-
|| 10 ||X|| || || || || || |
|-
|| 11 ||X|| || || || || || |
|}
*''Please help fixing this table!''
* "X", done ; "x", partially ; " ", please help = fill blanks with your name if you have some time.
*Summaries are in [[Lifeline|Lifeline#Summary of the issues]]
*To collate a Lifeline issue is to check wether a picture exists under some other name, or if a question in issue # N :
gets its answer in # N+1 => create a link
or stays unanswered => add to "[[Open problems in the Game of Life]]" which is to be created.

== Lifeline style ==

Be bold! ''Please add guidelines for :''

=== Text ===
The proposal is to keep linefeeds in the wiki source and let it flow on the page, except maybe in a table.

=== References and links ===
As usual in a wiki, only the first occurrence of a possible link is set.

=== Pictures ===
Pictures are conveniently :
*Drawn using ''golly'' and its grid that may be made 5*5, the same as Wainwright's pics
*Uploaded with the applet and saved in ConwayLife.com (.rle, to store the source file)
*Saved as .png and uploaded here : there exists a shorter way with a link to the CL site.
Naming pictures with page number looks easier (lifeline_vol05_503.png is pic 3 of page 5 of issue 5)

There must be a common way to label a picture (insert text of specific font, put "x" instead of cells, and so on) : the howto is lacking for now.

[[Category:Books and articles]]

Lifeline

2014-03-13T20:36:01Z

JWatCCI:

<center><pre>A QUARTERLY NEWSLETTER FOR ENTHUSIASTS OF JOHN CONWAY'S GAME OF LIFE

O OOOOO OOOOO OOOOO O OOOOO O O OOOOO
O O O O O O OO O O
O O OOO OOO O O O O O OOO
O O O O O O O OO O
OOOOO OOOOO O OOOOO OOOOO OOOOO O O OOOOO

</pre></center>

{| class="wikitable" style="text-align:center"
|The setup for the whole Lifeline issues data is a work in project. You can help [[Lifeline/project|HERE]] 
Thank you!
|}

'''Lifeline''' was a newsletter for "enthusiasts of [[John Horton Conway]]'s [[game of Life]]", first edited and published by [[Robert Wainwright]]. It was published quarterly, the first issue being in March 1971, and ran for twelve issues. The original newsletter was typewritten and the sheets were stapled together.
The newsletter itself followed an enthusiastic response to the first ''Martin Gardner'''s column in ''Scientific American'' (October 1970).

== Summary of the issues ==

=== [[Lifeline Volume 1|Volume 1]] MARCH 1971 ===
8 pages
*N-ominoes ([[Polyominos|Polyomino]])
*A classification system for Life '[[Pattern|Objects]]'
*Colliding spaceships
*Subclasses of Class II - [[Oscillators]]
*Known Class V (''Unstable, predictable'') object Life histories

=== [[Lifeline Volume 2|Volume 2]] JUNE 1971 ===
18 pages
*Fates of the last four unknown heptominoes
*An expanded classification system for finite Life objects
*Examples for each objects class
*Coming events
*A comprehensive file of information generated by life experimenters
*''Boltwood'''s Life program in FORTRAN

=== [[Lifeline Volume 3|Volume 3]] SEPTEMBER 1971 ===
32 pages
*Smallest [[still life]] objects : 4 to 9 cells
*The variety of flip-flop symmetry
*[[Shuttle]]s, [[Flotilla|flottillae]], [[glider gun]]s, [[puffer train]]s
*The Breeder (photographed on page 1)
*[[Methuselah]]s' census
*Spaceship factories
*[[Acorn]] data - generations, contents of the final population ('oak tree')

'''[[Wick]]s and [[agar]]s'''
*A classification system for 'wicks' (one-dimensionally infinite objects)
*Illusion of motion' (IoM)
*A summary of [[fuse]]s
*A classification system for 'agars' (two-dimensionally infinite objects)
*The smallest area that should contain a [[Garden of Eden]] (GoE) pattern
*Coming events

=== [[Lifeline Volume 4|Volume 4]] DECEMBER 1971 ===
12 pages
*Publisher R. T. Wainwright willing to be an antecessor
*The incredible '[[Switch engine]]'
*Diagonal [[puffer train]]
*Methuselah census
*'Natural pentadec'(athlon)
*Toroidal surface and variations to [[Conway]]'s basic [[rules]]
*Coming events
*Lifefile - ''Thompson's'' codex system for known Life objects

=== [[Lifeline Volume 5|Volume 5]] SEPTEMBER 1972 ===
7 pages
*New discoveries sent in by 'Buckinghams Combine'
*Summary of Conway' Life rules
*HOW TO PLAY LIFE
*Class E, Evolutionaries, Exercises, Et cetera . . .
*Class I, Still Lifes and Stable Forms . . .
*Class II, Oscillators . . .
*Reader Article . . .
*Excursions Into Other Universes . . .
*Answers to Reader Exercises
*COMING EVENTS
*RANDOM BITS
*LIFELINE EDITORIAL BOARD
*LIFE SAVER survey

==Scans of all Lifeline newsletters==
The [[:Category:Lifeline_issues|Lifeline project]] includes page images of the remaining Lifeline newsletters that have not yet been transcribed into text format.

==External links==
{{LinkLexicon|lex_l.htm#lifeline}}
{{LinkWeisstein|LifeLine.html}}

[[Category:Books and articles]]

JHC group

2014-03-13T20:35:16Z

JWatCCI:

The '''JHC group''' is a group of people studying [[Conway's Game of Life]] in the early 1970s. The group includes [[John Conway]], [[Stephen Bourne]], [[Michael Guy]], and [[Simon Norton]].

==Patterns found by the JHC group==
{{#dpl:category=Patterns found by JHC group|mode=category}}

==References==
* {{CiteHickersonOscillators}}

[[Category:People]]

Inductor

2014-03-13T20:34:58Z

JWatCCI:

{{Glossary}}
An '''inductor''' is any [[oscillator]] with a row of dead cells down the middle and whose two halves are mirror images of one another, both halves being required for the oscillator to work.

The classic examples are the [[pulsar]] and the [[tumbler]]. If [[still life]]s are considered as p1 oscillators, then there are numerous simple examples such as [[table on table]], [[dead spark coil]] and [[cis-mirrored R-bee]]. Some spaceships, such as the [[brain]], the [[snail]] and the [[spider]] use the same principle.

==Source==
{{LinkLexicon|lex_i.htm#inductor}}

Highway robber

2014-03-13T20:30:55Z

JWatCCI:

{{proposeddeletion|Is this actually a well-known term?}}
{{Glossary}}
A pattern which can absorb a [[glider]] from the edge of a diagonal strip along which many gliders are moving along close parallel lanes.

Herschel loop

2014-03-13T20:30:23Z

JWatCCI:

{{Glossary}}
A '''Herschel loop''' is a [[Herschel track]] with no overall displacement. Herschel loops are, in general, [[oscillator]]s with a [[period]] equal to the length of the loop, or a factor thereof. Herschel loops can be compressed to period 62, and a further four ticks can be squeezed out if the output [[glider]]s are suppressed. This statement is only true of Herschel loops containing [[stable]] components; loops containing oscillators can be compressed further (see [[Quetzal]]).

==See also==
*[[Emu]]
*[[Omniperiodic]]

User:Entity Valkyrie 2/Heisenburp

2014-03-13T20:30:01Z

JWatCCI:

{{proposeddeletion|Is this actually a well-known term?}}
{{Glossary}}
An object which can detect the passage of a [[glider]] without affecting the glider's path or timing. The name is a reference to the Heisenberg Uncertainty Principle, a principle in quantum physics which states that it is physically impossible to detect a particle without affecting it in some way. Clearly this is not the case in the Life universe!

Griddle

2014-03-13T20:28:48Z

JWatCCI:

{{Glossary}}
'''Griddle'''s refer to a type of p2 oscillator, comprising a [[rotor]] that is one quadrant of [[phoenix 1]] and an [[octomino]] [[stator]]. The latter further requires an [[induction coil]] for stability. Several varieties of the pattern can be constructed depending on the choice of induction coil.

The three smallest stabilizations are:
* [[Griddle and block]]
* [[Griddle and boat]]
* [[Griddle and beehive]]

Greyship

2014-03-13T20:27:38Z

JWatCCI:

{{Glossary}}
[[Image:Greyship2_H_Holzwart.png|framed|right|A greyship]]
A '''greyship''' is a [[spaceship]] which contains a region of [[density]] 1/2 (generally the [[zebra stripes|stripes agar]]) that can be extended to an arbitrary size both horizontally and vertically.

The first greyships were found by [[Hartmut Holzwart]] and [[Jason Summers]] in early July [[:Category:patterns found in 2005|2005]].<ref>{{cite web|url=http://pentadecathlon.com/lifeNews/2005/07/c2_and_2c4_greyships.html|title=c/2 and 2c/4 "greyships"|date=July 9, 2005|work=Game of Life News|author=Dave Greene|accessdate=January 10, 2011}}</ref> These ships traveled orthogonally at [[c/2 orthogonal|c/2]]. Since then greyships have been found for speeds [[c/3 orthogonal|c/3]], [[c/4 orthogonal|c/4]], [[c/5 orthogonal|c/5]], and [[2c/5 orthogonal|2c/5]].

==Types of greyships==
Most known greyship components use the stripes agar and travel with-the-grain (parallel to the stripes); There are some known '''against-the-grain''' greyships, in which the stripes are perpendicular to the direction of travel; however, these are only known for a speed of c/2.

Other than the stripes agar, there are a few known greyships that use the [[chicken wire]] agar. A looser definition of greyship may also include ships with extensible, high-density agars of higher periods.

==See also==
*[[Types of spaceships]]

==References==
<references/>

==External links==
{{LinkLexicon|filename=lex_g.htm#greyship}}

Glider pusher

2014-03-13T20:27:10Z

JWatCCI:

{{Glossary}}
An arrangement of a [[queen bee shuttle]] and a [[pentadecathlon]] that can push the path of a passing [[glider]] out by one half-diagonal space. This was found by [[Dieter Leithner]] in December 1993. It is useful for constructing complex [[gun]]s where it may be necessary to produce a number of gliders travelling on close parallel paths.

==See Also==
* [[edge shooter]]

==Source==
{{LinkLexicon|lex_g.htm#gliderpusher}}

Gfind

2014-03-13T20:25:56Z

JWatCCI:

A program by [[David Eppstein]] which uses [[de Bruijn graphs]] to search for new [[spaceships]]. It was with gfind that Eppstein found the [[weekender]], and Paul Tooke later used it to find the [[dragon]].

== Get from ==
* [http://www.ics.uci.edu/~eppstein/ca/gfind.c C source code]

== Source ==
{{LinkLexicon|lex_g.htm#gfind}}
[[Category:Software]]

User:Gameoflifeboy/Flip flop X

2014-03-13T20:24:30Z

JWatCCI:

{{Glossary}}
This is a class of [[oscillator]]s in the rule [[2x2]] that are, at generation 0, 2 cells wide. Not all Nx2 rectangles oscillate, though. The name comes from the fact that halfway through the period, the starting pattern appears rotated 90 degrees.

Flip-flop

2014-03-13T20:24:00Z

JWatCCI:

A {{disambig|name=flip-flop}}

one of three (non-equivalent) types of [[period]] [[:Category:Oscillators with period 2|2]] [[oscillator]]s:
* Any period 2 oscillator.
* Any period 2 oscillator whose two [[phase]]s are mirror images of one another. Examples include [[by flops]].
* Any period 2 oscillator in which all [[rotor]] cells die from [[underpopulation]]. Examples include [[clock]], [[fox]], and the [[barberpole|barberpoles]].

In the latter sense it contrasts with [[on-off]], which is a period 2 oscillator whose rotor cells die due to overpopulation. The term has also been used even more specifically to refer to [[phoenix 1]].

==External links==
{{LinkLexicon|lex_f.htm#flipflop}}

First natural glider

2014-03-13T20:22:27Z

JWatCCI:

{{Glossary}}
The '''first natural glider''' is the first [[glider]] released by a Herschel, named for being the first naturally occurring glider that was observed in the early days of Life research (by Conway's group when tracking the evolution of the [[R-pentomino]]). It is the main limiting factor in Herschel track compression. An [[Tub-with-tail_eater|eater5]] variant is the method of choice for the deletion, but some new [[sparker]]s might be able to "reach in" and delete the glider faster than the eater5.

==See also==
*[[Herschel]]
*[[B_track|Herschel track]]

Fencepost

2014-03-13T20:21:32Z

JWatCCI:

{{Glossary}}
Any pattern that stabilizes one end of a [[wick]].
==External links==
{{LinkLexicon|lex_f.htm#fencepost}}

Emu

2014-03-13T20:20:11Z

JWatCCI:

{{Glossary}}
An '''emu''' is a [[Herschel loop]], which does not emit [[glider]]s. Emus can be constructed for [[period]] 54 onwards (the first few are [[oscillator]]-assisted), but Herschel-based glider guns only exist for periods 54, 55, 56, 59, 60 and 62+. For the remaining periods, 57, 58 and 61, there are no known glider guns. Nevertheless, emus have been constructed for these periods.

== Etymology ==

The name derives from the fact that they are flightless (incapable of emitting gliders). This term was coined by [[Dietrich Leithner]].

== Emus as reflectors ==

Emus can be used to reflect gliders in an infinite variety of ways. [[Adam P. Goucher]] (with help from [[Jason Summers]]) exploited this property to construct the first period-59 gun. Unfortunately, that method does not generalise to the remaining emu-only periods, since it uses a special p59+15n reaction based on [[David Buckingham]]'s [[P44_pi-heptomino_hassler|p44 oscillator]].

== See also ==
* [[Quetzal]]

Edge shooter

2014-03-13T20:19:56Z

JWatCCI:

{{Glossary}}
An '''edge shooter''' is a [[gun]] which fires [[glider]]s or other spaceships beyond edge of the pattern, so that it can be used to fire them closely parallel to others. This is useful for constructing complex guns. Compare [[glider pusher]], which can in fact be used for making edge shooters.

This term should not be confused with '''side shooter''', which is [[Dietrich Leithner]]'s original name for the [[slide gun]].

Paul Callahan found a p46 edge-shooter in June 1994:

[[image:edgeshooter.png|thumb|left|edge shooter (p46)]]
[[image:edgeshooter.gif|thumb|right|edge shooter (p46)]]

Density

2014-03-13T20:18:42Z

JWatCCI:

{{Glossary}}
The '''density''' of a pattern is the proportion of live cells within its [[bounding box]].

The maximal densities of square (pseudo) [[still life]]s up to 20×20 are:

{| class="wikitable"
|-
! Side length !! Max. density !! Max. population
|-
| 1 || 0 || 0
|-
| 2 || 1 || 4 ([[block]])
|-
| 3 || 0.6̄|| 6 ([[ship]]))
|-
| 4 || 0.5 || 8 ([[pond]], [[long ship]]))
|-
| 5 || 0.64 || 16 (four blocks)
|-
| 6 || 0.5 || 18 (eg. two [[long shillelagh]]s)
|-
| 7 || 0.5714 || 28
|-
| 8 || 0.5625 || 36 (eg. nine blocks)
|-
| 9 || 0.5309 || 43
|-
| 10 || 0.5400 || 54
|-
| 11 || 0.5289 || 64
|-
| 12 || 0.5278 || 76
|-
| 13 || 0.5325 || 90
|-
| 14 || 0.5306 || 104
|-
| 15 || 0.5289 || 119
|-
| 16 || 0.531 || 136
|-
| 17 || 0.526 || 152
|-
| 18 || 0.528 || 171
|-
| 19 || 0.526 || 190
|-
| 20 || 0.525 || 210
|}

For any side length of the form 3n-1, a segment of [[block agar]] can be used to reach a population of 4n². Up to n = 4 this is the optimal solution.

==References==
* http://www.argentum.freeserve.co.uk/dense.htm
* http://www.ai.sri.com/~nysmith/life/

Constellation

2014-03-13T20:18:21Z

JWatCCI:

{{Glossary}}
Life evolves from [[soup]] to '''constellation'''.
[[Image:Rpent_final.png|right|thumb|The constellation that results from the [[R-pentomino]] at generation 1103 has 116 cells]]
A soup is a random input [[pattern]] that can change, move, grow, wither or disappear following the game [[rules]]. Beginning with a chosen pattern or with a soup, the final state is either :
* An empty space when every [[cell]] died.
* A constellation of [[still life]]s, [[oscillator]]s and diverging [[spaceship]]s. A [[methuselah]]'s lifetime is computed when the number of cells stabilizes as a fixed number, or a periodic one, and no collision may occur.
* Or an infinitely growing pattern ([[Gosper glider gun]] which is the simplest case, [[block-laying switch engine]].)
The constellation gets its name from a night sky's observation, where some stars seem to be grouped hapazard and never move : even a shooting star won't rearrange the overall look.
The counting of resulting patterns in a given constellation offers little more than statistical information.

Colourised Life

2014-03-13T20:17:45Z

JWatCCI:

This page is concerned with colourised variants of [[Life]]. These are [[cellular automata]] with multiple live states, represented by different colours. If the colours of the live cells are ignored, these rules behave identically to Life:

* As in Life, a live cell dies of underpopulation if it is surrounded by fewer than two live cells in its [[Moore neighbourhood]];
* A cell dies of overpopulation if it is surrounded by more than three live cells;
* A cell is born if and only if there are exactly three live neighbours in its Moore neighbourhood.

==Immigration==

'''Immigration''' has two live states, typically represented by red and blue cells. The following rules are present in Immigration to determine the colour of the live cells:

* Live cells retain their colour, permanently, until they die due to over- or underpopulation;
* When a cell is born, it takes on the colour value of the majority of its three neighbours.

Certain patterns exhibit interesting behaviour in Immigration. For example, it is possible to yield oscillators with a higher period than the equivalent Life oscillators (imagine two Herschels of different colours in a p256 loop).

The following image shows how a glider can support two different types of cells, symbiotically, without one becoming dominant:
[http://pentadecathlon.com/lifeNews/2006/03/2006-03-05-toad-glider.rle?bits=8 Toad glider]

==Quadlife==

'''Quadlife''' is a colourised variant of [[Life]], with four live states. These states are traditionally represented by different colours; this article assumes that red, green, yellow and blue are used.

Any configuration consisting of cells of just two colours behaves identically to Immigration. When newborn cells are created, they take on the majority colour of their neighbours. However, there is another possibility. If the three neighbours are all different colours, the newborn cell takes on the remaining colour. For instance, a dead cell surrounded by a single red cell, blue cell and green cell will become yellow in the next generation.

As in Immigration, cells that survive do not change colour.

==Niemiec's Life==

The last rule of Quadlife, where a cell takes on the remaining colour, is rather artificial. [[Mark Niemiec]] created a Life rule with eight live states, which circumvents this problem. The eight states are refered to as {a,b,c,d,a',b',c',d'}. The simulation looks best where the colours are positioned on the vertices of a cube in RGB space, and each cell is diametrically opposite to its complement. It has the following rules (as quoted from Niemiec's message):

* Three cells of the same colour produce a child of the same colour (x+x+x->x); this is compatible with mono-coloured Life, and also two-coloured Life (Immigration).
* Two cells of any one colour plus one of any colour favour the dominant colour (x+x+y->x); this is how conflicts are resolved in Immigration. This degrades into rule 1 if both colours are the same.
* Three cells of different colours in the same set produce the complement of the fourth colour (x+y+z->w'); This is similar to, but no identical to, the way QuadLife does it (x+y+z->w).
* Two complementary cells cancel out (x+x'+y->y). This also degrades into rule 1 if x and y are the same. (Unfortunately, this is NOT compatible with QuadLife; here, (a+b+c)+d+a->d'+d+a->a; in QuadLife, (a+b+c)+d+a->d+d+a->d).
* Two cells of different colours from one set plus one from the other set favour the solitary one (x+y+z'->z').

==Koenig's colourised life==

This rule differs from the previous rules in that the colours are continuous, rather than discrete. A newborn cell takes on the arithmetic mean colour, in terms of the HSL colour system, of its three neighbours.

Patterns generally reach equilibrium, like the oscillators in this image:
[http://pentadecathlon.com/lifeNews/2006/03/2006-03-07-color-osc-50.png Color Oscillators]

Koenig chose the HSL system over the RGB system, since patterns in the RGB system generally become grey blobs.

==External links==

http://pentadecathlon.com/lifenews/2006/03/colored_life.html

[[Category:Life-like cellular automata]]

Cluster

2014-03-13T20:16:01Z

JWatCCI:

{{Glossary}}
Any [[pattern]] in which each live [[cell]] is connected to every other live cell by a path that does not pass through two consecutive dead cells. This sense is due to Nick Gotts, but the term has also been used in other senses, often imprecise.

Antstretcher

2014-03-13T20:14:39Z

JWatCCI: {{Glossary}

{{Glossary}}
An '''antstretcher''' is a [[wickstretcher]] or wavestretcher that stretches some form of [[ant]]s.<ref>{{CiteLexicon|file=lex_a.htm#antstretcher}}</ref>

In [[:Category:Patterns found in 2011|2011]] [[:Category:Patterns found by Matthias Merzenich|Matthias Merzenich]] discovered a [[c/5 orthogonal]] anteater,<ref>{{Cite web|url=http://pentadecathlon.com/lifeNews/2011/05/oblique_antstretcher.html|title=Oblique Antstretcher|author=Adam P. Goucher|accessdate=Oct 11, 2011}}</ref> enabling completion of an oblique antstretcher.

==See also==
*[[Wickstretcher 1]]

==Notes==
<references/>

Anteater

2014-03-13T20:14:20Z

JWatCCI:

{{Glossary}}
An '''anteater''' is a pattern that eats [[ant]]s and can be stationary (such as the stabilization in [[electric fence]]) or moving. Moving anteaters have been found for the speeds of [[c/4 orthogonal]] and [[c/4 diagonal]], the diagonal case eating an oblique row of ants.

In [[:Category:Patterns found in 2011|2011]] [[:Category:Patterns found by Matthias Merzenich|Matthias Merzenich]] discovered a [[c/5 orthogonal]] anteater,<ref>{{Cite web|url=http://pentadecathlon.com/lifeNews/2011/05/oblique_antstretcher.html|title=Oblique Antstretcher|author=Adam P. Goucher|accessdate=Oct 11, 2011}}</ref> enabling completion of an oblique [[wavestretcher]].

==See also==
*[[Wickstretcher 1]]

==References==

<references/>

==External links==
{{LinkLexicon|lex_a.htm#anteater}}

User talk:Nathaniel

2014-03-13T20:13:42Z

JWatCCI: /* Add Category:Disambiguation pages to Template:Disambig */ new section

==Math formulae==
So, it was my impression that something like
:<math>\sqrt{1-e^2}</math>
should look like a math formula and those tags should do stuff. But that appears to not be the case. How come? [[User:Elithrion|Elithrion]] 03:40, 6 February 2009 (UTC)

: Stuff like that works on Wikipedia because of an extension they manually coded in. I'll see if I can find a way to install it, but it doesn't come with MediaWiki by default. [[User:Nathaniel|Nathaniel]] 03:45, 6 February 2009 (UTC)

:: Upon looking into this deeper, it doesn't look like it's going to be possible on the current server setup, since we're on a shared Windows host. If the wiki becomes more popular then it may become worth it to move to a Linux and/or dedicated host, but until then this won't happen. [[User:Nathaniel|Nathaniel]] 19:13, 1 March 2009 (UTC)

Thanks for correcting mistakes I made when editing the [[spaceship]] page (I'm a bit new to this whole wiki business). I was wondering If there were a page on conventions and standards used in this wiki.

Sokwe 17:54, 18 April 2009 (UTC)

You may want to be alerted to the [http://www.conwaylife.com/wiki/index.php?title=Talk:Main_Page&diff=prev&oldid=6402 spam] added to [[talk:Main Page]] by [[Special:Contributions/211.240.14.91|211.240.14.91]]

Sokwe 23:17, 21 April 2009 (UTC)

: Yep, it happens frequently enough, sadly. Thanks for deleting it -- I've banned that IP address. [[User:Nathaniel|Nathaniel]] 23:22, 21 April 2009 (UTC)

==Error in wickstretcher template==
The [[Template:Wickstretcher|wickstretcher template]] puts anything you write ''inside'' the infobox. This is because the table in the template has no concluding "|}". Please add a line containing "|}" directly above the <nowiki><noinclude></nowiki> tag.

~Sokwe 00:33, 25 April 2009 (UTC)

: Whoops. Thanks for letting me know, it's fixed now. [[User:Nathaniel|Nathaniel]] 03:02, 25 April 2009 (UTC)

==Problems with forms==
I somehow seem to have caused some problems with forms such as the [[:Category:oscillators|oscillator search form]]. I was testing their functionality for other purposes, and somehow caused an error: %DPL-1.7.4-WARNING: Wrong '$0' parameter: 'uses'! Using default: 'Template:{#request:cat}'. Help: $0=

'''Note''': "Template{#request:cat}" was part of the stuff I was doing.
I never saved any pages, I was just viewing previews for testing.

Sorry about the mess!

~Sokwe 21:31, 25 April 2009 (UTC)

: I'm hoping it's a caching issue... DynamicPageList loves giving cryptic error messages as a result of an invalid search that was performed hours earlier, so hopefully it clears up by itself soon. In the meantime, I'll look for a way to disable the caching so that this stuff doesn't happen. [[User:Nathaniel|Nathaniel]] 21:46, 25 April 2009 (UTC)

== Parameter search ==

I created a simple [[User:Sokwe/Template:info search|template]] to be used to look up which pattern pages are missing specific parameters in their templates (there may be some bugs, I haven't tested it much). This can be used to look up such things as which patterns do not have defined glider syntheses or bounding boxes. I was wondering if this template should be included on another page as a resource for other contributers if they feel they have the time to add information like this (for example, I recently added bounding box sizes to ''all'' of the still life pages). ~Sokwe 17:44, 26 April 2009 (UTC)

: That's pretty excellent, thanks. I think that the most natural place for it is probably [[LifeWiki:Helping out]] in a new subsection. [[User:Nathaniel|Nathaniel]] 17:51, 26 April 2009 (UTC)

::I added it under [[LifeWiki:Helping_out#Adding_pattern_information|Adding pattern information]], but it requires [[Template:(]] to work; this template should probably be protected. I also created a new page for it: [[Template:PatternInfoSearch]] ~Sokwe 18:50, 26 April 2009 (UTC)

==Error in GrowingSpaceship template==
It's the ''exact'' [[User_talk:Nathaniel#Error_in_wickstretcher_template|same problem]] that the wickstretcher template had: [[Template:GrowingSpaceship]] puts information from the page inside the infobox. Please add the necessary "|}" above the <nowiki><noinclude></nowiki> tag. ~Sokwe 20:19, 26 April 2009 (UTC)

: Thanks, fixed now. It's a result of the new glider synthesis boxes -- I made the necessary change on most of the other templates (such as [[Template:Oscillator]]), but I apparently missed Wickstretcher and GrowingSpaceship. Fixed now. [[User:Nathaniel|Nathaniel]] 20:26, 26 April 2009 (UTC)

== Some suggested updates ==

I've created a [[Template:Reflector|template for reflectors]] because they currently all use the pattern template. [[:Category:Eaters|Eaters]] also use the pattern template even though they are exclusively still lifes. I suggest adding support for type=eater to the [[Template:stilllife|still life template]]. I also suggest that you delete [[Template:People]] as it has been effectively replaced by [[Template:Person]]. ~Sokwe 13:58, 28 April 2009 (UTC)

: Those changes have now been made. [[User:Nathaniel|Nathaniel]] 14:31, 28 April 2009 (UTC)

===Some more ideas for updates===

First of all, I suggest that you replace the number of glider syntheses on the main page (currently "over 200") with the following:

<code><nowiki>{{#dpl:categorymatch=Patterns_that_can_be_constructed_with%|resultsheader=%TOTALPAGES%|format={{#if,:,,:|}}}}</nowiki></code>

Also, I have the basic design for a navigation box for oscillator periods. This would go on oscillator period category pages and would link to the nearest oscillator period categories (it does not link to pages that do not exist). What I haven't come up with is a good format for displaying this information, and I was wondering what you thought about it.

The basic idea:

p=2 
{{User:Sokwe/Template:osc_num|p=2}}

p=18 
{{User:Sokwe/Template:osc_num|p=18}}

p=144 
{{User:Sokwe/Template:osc_num|p=144}}

 ~Sokwe 20:41, 7 June 2009 (UTC)

: Very nice, made the glider synthesis change and inserted your template into the appropriate oscillator category pages. Thanks, and great work! [[User:Nathaniel|Nathaniel]] 12:37, 8 June 2009 (UTC)

== ? ==

Why did you undo my edit?--[[Special:Contributions/71.80.49.38|71.80.49.38]] 14:09, 9 August 2009 (UTC)

== The new agar ==
I found the agar in '''Serviettes (B234/S)''' rule! 
please visit my user page.--[[User:David|David]] 13:53, 13 December 2009 (UTC)
:And, would you change this agar to oscillator or spacefiller? --[[User:David|David]] 06:19, 15 December 2009 (UTC)

== Upload request ==

Please upload the file ''Diuresis.rle'' from http://www.conwaylife.com to the extant [[Diuresis]] pattern page. You were devising a method to let people upload .rles, weren't you ?

Thanks a lot. --[[User:Methodood|Methodood]] 21:31, 16 December 2009 (UTC)
:It is possible to add patterns to the online database via the save/online database feature in Nathaniel's Game of Life player. This will save the pattern to the online database in RLE format, however, it can be overwritten. The pattern can be added to the ''official'' database (including other formats) by any of the conwaylife.com [http://www.conwaylife.com/forums/memberlist.php?mode=group&g=4&sid=1a91dd137f0f14460d2527db6280b122 moderators]. Patterns in the official database can not be overwritten via the the Game of Life player, so if you find that a pattern in the official database needs to be replaced, you should contact one of us. (Note: I have also uploaded the requested pattern files) ~Sokwe 22:48, 16 December 2009 (UTC)

== Suggestions ==

I have a few suggestions:
*Make a simplified version that can be embedded into pages (this would require a MediaWiki extension) so that users can view pattern evolution without having to go to a separate page.
*Add a "clear" button to make erasing patterns easier. Also allow editing after pressing the back button, which would become especially important in case users accidentally press the aforementioned button.
I think that these would both be helpful additions.

Also, why are you unable to add MediaWiki extensions on a shared Windows host? Can't you just copy the PHP files into the proper directory? Or do you not have access to the MediaWiki directories? [[User:The last username left|The last username left]] 02:35, 29 December 2009 (UTC)

: Hi there, and welcome to the wiki. What do you mean about a "simplified version"? Do you mean a simplified version of the applet to be embedded in wiki pages? That would indeed be quite cool, though I'm not sure I have the time at the moment for that undertaking. I'll add it to the to-do list though. As for the clear button -- there should already be a clear button at the lower-right corner of the applet. Does it not appear for you?

: As for editing after pressing the back button -- I'm not sure this will happen. It would require re-writing a *lot* of the applet, and I'm not sure how to even go about doing it while maintaining the functionality of the applet.

: I am quite capable of adding MediaWiki extensions to the wiki (and in fact there are a handful of them running on this wiki right now, mostly to do things like fight spam). What I wrote above about being on a Windows host is only a problem for the specific extension that enables the <math> tag. [[User:Nathaniel|Nathaniel]] 06:39, 29 December 2009 (UTC)

::Oops, sorry about that. I had originally said "a few suggestions about the applet", but reworded it. I forgot to mention it in the suggestion. Yes, I meant a simplified version of the applet.

::No, the clear button does not appear for me - at least not on the computer I was using at the time (Vista with IE8). Over on a Windows 7 machine, it appears just fine. I think it was because of the font size settings on that computer. The menu is still not working properly, though; see the screenshot. [[User:The last username left|The last username left]] 23:21, 29 December 2009 (UTC)

[[Image:Applet menu issue.png]]
==I want to...==
Please active my account in conwaylife.com forums.--[[User:David|David]] 08:36, 23 January 2010 (UTC)

: I assume that your forums account has the username "David"? If so, then this is done now. [[User:Nathaniel|Nathaniel]] 14:38, 23 January 2010 (UTC)

==Sawtooth 262==
You'll need to update the [[Sawtooth/Snippet|sawtooth snippet]] for [[sawtooth 260]] because it's protected (due to currently being included on the main page).
:'''Edit''': Never mind, it is no longer the featured article, so I did it myself. ~Sokwe 09:53, 31 May 2010 (UTC)

==Citation extension not working==
The reference tags (<nowiki><ref></nowiki>) don't seem to be working. ~Sokwe 01:45, 29 May 2010 (UTC)

: Thanks Sokwe. My server folks moved the site to a new machine that doesn't like the citations extension (or one of the spam-fighting extensions, hence the increase in spam over the last few days). Hopefully I'll be able to figure it out soon. [[User:Nathaniel|Nathaniel]] 15:23, 31 May 2010 (UTC)

:: OK, looks like the citations extension is (finally) functional again. [[User:Nathaniel|Nathaniel]] 13:01, 8 July 2010 (UTC)

== Refs are not doing their job properly ==

(And I don't mean football referees! :)

The <nowiki><ref> </ref></nowiki> tags are no longer being recognised by the software on LifeWiki, thus making a complete mess of every page. An example is the page entitled [[Switch engine]].

-- [[User:Calcyman|Calcyman]] 19:57, 4 June 2010 (UTC)

: Thanks Calcyman -- see one section up on my talk page for an explanation. Should hopefully have it figured out soon. [[User:Nathaniel|Nathaniel]] 23:42, 4 June 2010 (UTC)

== Lake discussion page ==

To circumvent the continual spam, I have attempted to protect [[Talk:Lake|this page]] from editing by using the 'protected' template. Unfortunately, it doesn't seem to be working. [[User:Calcyman|Calcyman]] 10:51, 14 June 2010 (UTC)
:Placing {{[[Template:Protected|Protected]]}} on a page doesn't protect the page. A sysop/administrator/bureaucrat/etc needs to use the protect feature which does not appear for normal users who cannot use this feature. [[User:Keiji|Keiji]] 15:51, 15 June 2010 (UTC)

::Yes, I know that, but it might trick the spam-bots. They might be programmed to ignore pages with the 'protected' template, since pages on Wikipedia with this template are protected, so there is no point attempting to edit them.

::: I've gone ahead and actually protected the page from unregistered users. [[User:Nathaniel|Nathaniel]] 20:06, 15 June 2010 (UTC)

==Merging and deleting users==
Since you are the only one capable of using the merge and delete user extension, you will need to delete/merge any of the spam accounts that I block. ~[[User:Sokwe|Sokwe]] 01:31, 15 May 2011 (UTC)

==Spam issues==
Much of the spam that we currently get is from new accounts. Would it be possible to prevent accounts that are less than a couple of days old from posting external links or uploading files? (or does that seem too restrictive to new, legitimate users?) ~[[User:Sokwe|Sokwe]] 17:07, 29 May 2011 (CDT)

: I'll look at another spam-fighting extension or two tomorrow to see what can be done before doing that. I'd like people to be able to sign up and start editing right away... maybe e-mail address verification should be required? [[User:Nathaniel|Nathaniel]] 21:25, 29 May 2011 (CDT)

:: Looks like a change I made yesterday afternoon is working for now at least. If (when?) the current system starts to fail, I will implement reCAPTCHA for suspicious edits and see how that works. [[User:Nathaniel|Nathaniel]] 10:46, 31 May 2011 (CDT)

==Animated Gif==
How do I get the animated gif working at [[Karel's p15]]? --[[User:Scotgot|Scot Ellison]] 14:06, 21 July 2011 (CDT)
: There was a memory problem with MediaWiki that made it not want to play nice with newly-uploaded animated GIFs. Fixed now! [[User:Nathaniel|Nathaniel]] 00:20, 22 July 2011 (CDT)
::Thanks! :) S.E.

==Wrong page title==
I somehow got the wrong title on the [[P11_signal_injector]] page. I intended it to be P11 double-length signal injector, but I can't seem to change it now. Is there way for me to fix this without creating a new page and setting a redirect?--[[User:Scotgot|Scot Ellison]] 10:58, 3 August 2011 (CDT)

: I've moved the page for you. Only administrators (i.e., me and Sokwe) can move pages, so just ask and it'll be done! [[User:Nathaniel|Nathaniel]] 00:24, 5 August 2011 (CDT)

== External links bug ==

Hi, I seem to be getting loads of "Your edit includes new external links" prompts, even when I'm not. (Such as this very query.) I think this is triggered whenever I try to edit a page that contains external links - including those to pattern files - for the first time?

'''ETA:''' Nope, not quite. Just got the same with the Task List which I have edited before. Pages not edited before this bug turn'd up, then?

Besides… Doesn't MediaWiki allow limiting these kind of checks to some editors? Eg. accounts with less than X edits, or younger than Y days?--[[User:Tropylium|Tropylium]] 07:53, 8 September 2011 (CDT)

: Thanks for letting me know, I'll look into it. Unfortunately the MediaWiki spam fighting tools leave a bit to be desired -- they're actually implemented via extensions (i.e., they aren't built into MediaWiki itself at all). The extension I'm using has fairly limited categories for who is subject to spam verification and who isn't -- basically it boils down to the question of "are you an admin or not?" But still, it shouldn't be asking you to verify if the links aren't new... will get back to you. [[User:Nathaniel|Nathaniel]] 09:45, 8 September 2011 (CDT)

:: I've created a "trusted" user group that is exempt from the SPAM filter, and placed you and a few other people into it. You shouldn't get those anti-SPAM messages at all anymore (let me know if you experience otherwise). [[User:Nathaniel|Nathaniel]] 09:58, 8 September 2011 (CDT)

== Day & Night Link Broken ==

This link is broken: [[Day & Night]]

Can you move it to somewhere else so that we can access it?

[[User:Zhuyifei1999|Zhuyifei1999]] 09:13, 20 February 2013 (CST)

:Fixed. I made a redirect that works. But I'm waiting for you to update the system so that it can support "&" marks.

:[[User:Zhuyifei1999|Zhuyifei1999]] 13:41, 14 March 2013 (UTC)

:: Hi Zhuyifei1999. Unfortunately, this is a result of the wiki using short URLs, and it seems that the only fix is to install a patch to apache that alters how it deals with ampersands. I don't have access to install patches on the server myself (it's a shared host), so the best that I can do it contact my host about it and hope they're willing to install it for me. Given this, I would recommend either continuing to use the work-around you have right now, or re-naming the page to something like [[Day and Night]].

:: [[User:Nathaniel|Nathaniel]] 12:30, 22 March 2013 (UTC)

:::[http://en.wikipedia.org/wiki/Day_%26_Night Wikipedia] uses [http://www.mediawiki.org/wiki/Manual:Short_URL short URLs] too, but it works. So I think the bug is not caused by short URLs, instead, I think it is caused by version problems.

:::[[User:Zhuyifei1999|Zhuyifei1999]] 22:53, 22 March 2013 (UTC)

:::: Wikipedia has root access and has installed the apache patch that alters how it deals with ampersands. Unfortunately, I can't do the same, since I don't have root access. You can see a brief discussion about this issue [http://lists.wikimedia.org/pipermail/mediawiki-l/2005-June/005814.html here]. - [[User:Nathaniel|Nathaniel]] 01:24, 23 March 2013 (UTC)

== Move request ==

[[:File:Live_Free_or_Die_Spaceship.png]] to [[:File:Moon.png]]

[[User:Zhuyifei1999|Zhuyifei1999]] 03:54, 26 February 2013 (CST)

: Moved. [[User:Nathaniel|Nathaniel]] 12:30, 22 March 2013 (UTC)

== Upload pattern request ==

[[Moon]]:

<code>
x = 2, y = 4, rule = B2/S
 
o$bo$bo$o!
</code>

[[Frothing puffer]]:

<code>
.......O.................O.......
 
......OOO...............OOO......
 
.....OO....OOO.....OOO....OO.....
 
...OO.O..OOO..O...O..OOO..O.OO...
 
....O.O..O.O...O.O...O.O..O.O....
 
.OO.O.O.O.O....O.O....O.O.O.O.OO.
 
.OO...O.O....O.....O....O.O...OO.
 
.OOO.O...O....O.O.O....O...O.OOO.
 
OO.........OO.O.O.O.OO.........OO
 
............O.......O............
 
.........OO.O.......O.OO.........
 
..........O...........O..........
 
.......OO.O...........O.OO.......
 
.......OO...............OO.......
 
.......O.O.O.OOO.OOO.O.O.O.......
 
......OO...O...O.O...O...OO......
 
......O..O...O.O.O.O...O..O......
 
.........OO....O.O....OO.........
 
.....OO....O...O.O...O....OO.....
 
.........O.OO.O...O.OO.O.........
 
..........O.O.O.O.O.O.O..........
 
............O..O.O..O............
 
...........O.O.....O.O...........
 
</code>

[[Jagged lines]]:

<code>
<nowiki>
#C Jagged lines</nowiki> <nowiki>
#C Jagged lines of gliders, formed by a drifting collision of two LWSS</nowiki> <nowiki>
#C streams, crash to form an approximately vertical jagged line of pairs</nowiki> <nowiki>
#C of blocks. I don't know if the line stays within a bounded distance</nowiki> <nowiki>
#C of the center line, or extends infinitely far to the left, or to the</nowiki> <nowiki>
#C right, or both.</nowiki> <nowiki>
#C Dean Hickerson, 5/3/2005</nowiki> <nowiki>
x = 125, y = 67, rule = B3/S23</nowiki> <nowiki>
42bo13bo11bo13bo$41b3o11b3o9b3o11b3o$40b2obo5bo4b2obo9bob2o4bo5bob2o$
40b3o5b3o3b3o11b3o3b3o5b3o$41b2o4bo2b2o3b2o11b2o3b2o2bo4b2o$47bo3bo21b
o3bo$48b2obo21bob2o$50b2o21b2o2$55b3o9b3o$33b3o5b3o11bo2bo7bo2bo11b3o
5b3o$32b5o3bo2bo11bo13bo11bo2bo3b5o$31b2ob3o6bo11bo13bo11bo6b3ob2o$4o
5b2o21b2o9bo12bo11bo12bo9b2o21b2o5b4o$o3bo3b2ob2o30bo6bo23bo6bo30b2ob
2o3bo3bo$o8b4o29bo5b2obo21bob2o5bo29b4o8bo$bo8b2o36bo2bo21bo2bo36b2o8b
o2$13bo30b2o5bo21bo37bo$3b2o8b2o12bo17bo4bobo19bobo22bo12b2o8b2o$2bo2b
o9bo12b2o19bo25bo19b2o12bo9bo2bo$2bo2bo4b5o12b2o67b2o12b5o4bo2bo$2b2ob
2o3b4o97b4o3b2ob2o$4b2o4bo103bo4b2o3$11b3o97b3o$4o6b5o95b5o6b4o$o3bo4b
2ob3o95b3ob2o4bo3bo$o9b2o25b2o47b2o25b2o9bo$bo34b4o45b4o34bo$19b2o14b
2ob2o45b2ob2o14b2o$18b4o14b2o19b3o5b3o19b2o14b4o$17b2ob2o34bo2bo5bo2bo
34b2ob2o$18b2o39bo5bo39b2o$59bo5bo$59bo5bo$23bo34bo7bo34bo$21b4o75b4o$
20bob5o71b5obo$19b2o6bo27b2o11b2o27bo6b2o$20b3obo3bo25b2ob3o5b3ob2o25b
o3bob3o$21b3o3bo27b5o5b5o27bo3b3o$26bo29b3o7b3o29bo2$19b2o20b3o37b3o
20b2o$18b4o4b4o11bo41bo11b4o4b4o$17b2ob2o4bo3bo11bo39bo11bo3bo4b2ob2o$
2b4o5b2o5b2o6bo71bo6b2o5b2o5b4o$2bo3bo3b2ob2o12bo69bo12b2ob2o3bo3bo$2b
o8b4o21b3o47b3o21b4o8bo$3bo8b2o22bo51bo22b2o8bo$37bo49bo2$5bo6bo99bo6b
o$4bo7b2o17b3o57b3o17b2o7bo$4bo6b2o18bo61bo18b2o6bo$4b2o4b2o20bo59bo
20b2o4b2o$6bo111bo$8b2o105b2o$26b3o67b3o$26bo71bo$2b4o21bo69bo21b4o$2b
o3bo13bo83bo13bo3bo$2bo16bo85bo16bo$3bo15bo3bo77bo3bo15bo$19b4o79b4o!
</nowiki>
</code>

[[Duoplet]]:

<code>
x = 2, y = 2, rule = B2/S
 
bo$o!
</code>

[[loafer]]:

<code>
x = 9, y = 9, rule = B3/S23
 
boobboboo$obbobboo$bobo$bbo$8bo$6b3o$5bo$6bo$7boo!
</code>

[[loafer]] glider synthesis:

<code>
x = 40, y = 37, rule = B3/S23
 
38bo$37bo$37b3o2$8bobo$obo6b2o$b2o6bo$bo3$4bobo$5b2o$5bo20bo$24bobo$
25b2o2$33bo$33bobo$33b2o6$38bo$37b2o$37bobo8$5b3o$7bo$6bo!
</code>

[[Edge-repair spaceship 1|edgerepairspaceshipsandobjects.rle]]:

<code>
x = 113, y = 11, rule = B3/S23 
107bo3bo$107b2ob2o$108bobo$29bo76bobobobo$16bo11b2o8bo19bo8b2o8bo19bo
8b2o3b2o$o14b4o9bo8b4o15b4o7b2o7b4o15b4o8bo3bo$obo7bo3bo3b2ob2o9bo3bo
3b2ob2o7b2ob2o3bo3bo6bo3bo3b2ob2o7b2ob2o3bo3bo$3o6b4o5bo2b2o8b4o5bo2b
2o7b2o2bo5b4o4b4o5bo2b2o7b2o2bo5b4o$2bo5bo3bo7bo2bo6bo3bo7bo2bo5bo2bo
7bo3bo2bo3bo7bo2bo5bo2bo7bo3bo$9bobo2bo16bobo2bo23bo2bobo4bobo2bo23bo
 
2bobo$13bo21bo25bo12bo25bo!
</code>

[[Flying wing]]:

<code>
x = 159, y = 90, rule = B3/S23
 
13b3o11b3o99b3o11b3o$12bo3bo9bo3bo97bo3bo9bo3bo$11b2o4bo7bo4b2o95b2o4b
o7bo4b2o$10bobob2ob2o5b2ob2obobo93bobob2ob2o5b2ob2obobo$9b2obo4bob2ob
2obo4bob2o35b3o15b3o35b2obo4bob2ob2obo4bob2o$8bo4bo3bo2bobo2bo3bo4bo4b
o28bo3bo13bo3bo28bo4bo4bo3bo2bobo2bo3bo4bo$20bobo15b3ob2o23b2o4bo11bo
4b2o23b2ob3o15bobo$8b2o7b2obobob2o7b2o2b2o3bob2o20bobob2ob2o3b3o3b2ob
2obobo20b2obo3b2o2b2o7b2obobob2o7b2o$20bobo13b2o2bo4b5o15b2obo4bob2ob
3ob2obo4bob2o15b5o4bo2b2o13bobo$14b3o9b3o5bo2bo5bobobob2ob2o5bo4bo4bo
3bo4bobo4bo3bo4bo4bo5b2ob2obobobo5bo2bo5b3o9b3o$14bo3bo9bo6bo8bo3bo3bo
b2o2b3o15bo5bo15b3o2b2obo3bo3bo8bo6bo9bo3bo$14bobo4b3o26bo4b3ob3o2b2o
7b2o9b2o7b2o2b3ob3o4bo26b3o4bobo$20bo2bo4b2o19bo3bobo5b2o33b2o5bobo3bo
19b2o4bo2bo$23bo30bo6bo2bo29bo2bo6bo30bo$19bo3bo39bo31bo39bo3bo$19bo3b
o111bo3bo$14bo8bo111bo8bo$14bobo3bobo113bobo3bobo$14b2o127b2o4$12bo23b
3o11b3o53b3o11b3o23bo$12bobo20bo3bo9bo3bo51bo3bo9bo3bo20bobo$12b2o20b
2o4bo7bo4b2o49b2o4bo7bo4b2o20b2o$33bobob2ob2o5b2ob2obobo47bobob2ob2o5b
2ob2obobo$32b2obo4bob2ob2obo4bob2o45b2obo4bob2ob2obo4bob2o$31bo4bo3bo
2bobo2bo3bo4bo43bo4bo3bo2bobo2bo3bo4bo$10bo32bobo67bobo32bo$10bobo18b
2o7b2obobob2o7b2o43b2o7b2obobob2o7b2o18bobo$10b2o31bobo67bobo31b2o$37b
3o9b3o55b3o9b3o$37bo3bo9bo55bo9bo3bo$37bobo4b3o65b3o4bobo$8bo34bo2bo4b
2o53b2o4bo2bo34bo$8bobo35bo65bo35bobo$8b2o32bo3bo65bo3bo32b2o$42bo3bo
65bo3bo$37bo8bo65bo8bo$37bobo3bobo67bobo3bobo$6bo30b2o81b2o30bo$6bobo
141bobo$6b2o143b2o2$35bo87bo$35bobo83bobo$4bo30b2o85b2o30bo$4bobo145bo
bo$4b2o147b2o2$33bo91bo$33bobo87bobo$2bo30b2o89b2o30bo$2bobo149bobo$2b
2o151b2o2$31bo95bo$31bobo91bobo$o30b2o93b2o30bo$obo153bobo$2o155b2o2$
29bo99bo$29bobo95bobo$29b2o97b2o$3o153b3o$obo153bobo$3o153b3o$27bo103b
o$6b2o19bobo99bobo19b2o$8bo18b2o101b2o18bo$6b3o141b3o$5bob2o141b2obo$
4bobo145bobo$4bobo18bo107bo18bobo$25bobo103bobo$9b2o14b2o105b2o14b2o$
8bo2bo135bo2bo$9b2o137b2o2$23bo111bo$12b2o9bobo107bobo9b2o$11bo2bo8b2o
109b2o8bo2bo$12b2o131b2o3$21bo115bo$21bobo111bobo$17b2o2b2o113b2o2b2o$
 
17b2o121b2o!
</code>

[[User:Zhuyifei1999|Zhuyifei1999]] 04:24, 26 February 2013 (CST)

: Sorry for the delay -- I'll get to these shortly. Will let you know once they're online. [[User:Nathaniel|Nathaniel]] 12:31, 22 March 2013 (UTC)

== Snark reflector ==

Hello,

Here's the missing RLE data for the [[Snark]] reflector:

<code>
x = 23, y = 19, rule = B3/S23
 
18b2o$18bo$20bo$2o14b5o$bo13bo$bobo12b3o$2b2o15bo$16b4o$11b2o3bo3b2o$
 
11b2o4b3o2bo$19bob2o$3b2o14bo$2bobo13b2o$4bo2$10b2o$10bo$11b3o$13bo!
</code>

[[User:MikeP|MikeP]] 16:00, 30 May 2013 (UTC)

:Actually, for a reflector it would make sense to set as default a version with a smaller bounding box rather than the original version. Of course, the original version is also worth mentioning.
<code>x = 23, y = 17, rule = B3/S23 
18bo$2o14b5o$bo13bo5bo$bobo12b3o2bo$2b2o15bob2o$16b4o2bo$11b2o3bo3b2o$ 
11b2o4b3o$19bo$19bob2o$18b2ob2o$b2o$obo$2bo7b2o$10bo$11b3o$13bo!</code>
:[[User:Codeholic|Codeholic]] 19:42, 31 May 2013 (UTC)

Here is glider synthesis of the Snark. Please add it to the article.
<pre>
#N Snark_synth
#O Ivan Fomichev
#C Continuous synthesis of the snark, with improvements by Mark Niemiec.
#C http://www.conwaylife.com/wiki/Snark
x = 216, y = 212, rule = B3/S23
194bo8bo$194bobo4b2o12bo$194b2o6b2o9b2o$214b2o11$191bo$189b2o$190b2o2$
13bobo$14b2o$14bo2$178bo$177bo$2bo174b3o$obo$b2o7$4bobo8bo149bo$5b2o9b
2o145b2o$5bo9b2o147b2o4$158bo$157bo$157b3o5$29bo$30b2o118bobo$29b2o
119b2o$151bo$35bo125bo5bo$33bobo120bo3bo5bo$34b2o118b2o4b3o3b3o$155b2o
2$37bo$35bobo$36b2o9$151bo$150bo$150b3o12$140bobo$140b2o$141bo14$126bo
$124b2o$125b2o4$93bo$94b2o$93b2o2$106bo$105bo$105b3o$117bobo$86bobo28b
2o$87b2o29bo$87bo7$91b3o$93bo$92bo$110b2o$109b2o$111bo7$118b2o9b2o$86b
2o30bobo8bobo$85bobo30bo10bo$87bo2$118b2o$117b2o$119bo$125b2o$83b2o39b
2o$82bobo41bo$84bo5$144bo$143b2o$143bobo4$151b3o$151bo$152bo3$148b2o$
147b2o$149bo6$164bo$163b2o$163bobo$147bo$146b2o$146bobo$27bo$27b2o$26b
obo6$19bo9b3o$19b2o10bo$18bobo9bo125b2o$156bobo$23b2o131bo$22bobo$24bo
7$22b2o$23b2o$22bo174bo$196b2o$196bobo5$206b2o$206bobo$206bo3$181b3o$
181bo$4b2o176bo$3bobo$5bo!
</pre>
[[User:Codeholic|Codeholic]] 19:47, 6 July 2013 (UTC)

== Fore and back synthesis ==

Please add this to the article.
<pre>
#N Fore and back_synth
#O Mark D. Niemiec
#C Glider synthesis of Fore and back.
#C http://www.conwaylife.com/wiki/Fore_and_back
x = 103, y = 37, rule=B3/S23
71bo$71bobo$71boo$66bo$59bo4bobo$60bo4boo$58b3o$71bo$69boo$70boo$$5bo
26bo29bo$4bo26bobo27bobo$boob3o23bobbo21bo4bobbo$obo28boo20bobo5boo$bb
o51boo11bo3bobo6bo15booboo$66bo4boo5boo16boobobo$66b3o3bo6boo18bobbo$
96boo3boo$58boo6bo3b3o23bobbo$59boo5boo4bo24boboboo$16bo41bo6bobo3bo
11boo13booboo$16bobo27boo28boo5bobo$12b3oboo27bobbo26bobbo4bo$14bo30bo
bo27bobo$13bo32bo29bo$$67boo$68boo$67bo$78b3o$72boo4bo$72bobo4bo$72bo$
66boo$65bobo$67bo!
</pre>
[[User:Codeholic|Codeholic]] 19:43, 10 September 2013 (UTC)

: Thanks, Codeholic. I've (finally) added these last two glider syntheses. [[User:Nathaniel|Nathaniel]] 15:54, 3 October 2013 (UTC)

==60P312?!==

i have NO IDEA how to make a new section so i'll put it here. Nathaniel, whydid you delete 60P312? i was looking forward to building it as it only has 60 cells.

: Unfortunately, as the page was deleted almost 3 years ago (May 2011), I don't remember anymore why it was deleted (and the wiki doesn't seem to have a copy of the old page anymore, so I can't see what was on it). However, it looks like it may have been accidentally deleted when I deleted a bunch of spam pages -- if that's the case, I apologize. [[User:Nathaniel|Nathaniel]] 17:28, 28 January 2014 (UTC)

== Spam pages to delete ==

BTW, there's a bunch (~35, and I'm going to add more now) of spam pages in [[:Category:Speedy_deletion]] waiting to be deleted. [[User:JWatCCI|JWatCCI]] 16:53, 13 March 2014 (UTC)
:And [http://www.conwaylife.com/w/index.php?title=User_talk:Healthyweightloss&action=history this user] has reverted the removal of their spam, and should be blocked. [[User:JWatCCI|JWatCCI]] 17:03, 13 March 2014 (UTC)

== Toplevel category ==

I'd like to make [[:Category:Everything else]] (and the other protected categories) into subcategories of new category I just created [[:Category:Toplevel category]], for simplicity of categorization (so there is only one [[Special:UncategorizedCategories|un-categorized category]]), but I can't do so because they are protected. Assuming you agree, please do so (or remove the protection and I'll do it). Thanks! [[User:JWatCCI|JWatCCI]] 18:01, 13 March 2014 (UTC)

== Add [[:Category:Disambiguation pages]] to [[Template:Disambig]] ==

In order to automatically categorize disambiguation pages, please consider adding (the newly created, by me) [[:Category:Disambiguation pages]] to [[Template:Disambig]]. [[User:JWatCCI|JWatCCI]] 20:13, 13 March 2014 (UTC)

Category:Disambiguation pages

2014-03-13T20:11:35Z

JWatCCI: Created page with "__HIDDENCAT__ This category contains pages used to disambiguate between multiple terms."

__HIDDENCAT__
This category contains pages used to disambiguate between multiple terms.

Category:Superstrings

2014-03-13T20:07:46Z

JWatCCI:

This category contains all pages describing specific '''[[superstring]]s'''.
[[Category:Pattern categories]]

Category:Hidden categories

2014-03-13T20:06:27Z

JWatCCI:

This category lists categories that are hidden within LifeWiki.
[[Category:Toplevel category]]

Category:Corderships

2014-03-13T20:05:53Z

JWatCCI:

{{SpaceshipNavbox}}
A '''[[Cordership]]''' is a [[spaceship]] that is based on [[switch engine]]s. They necessarily have [[speed]] c/12 and [[period]] that is a multiple of 96.
[[Category:Pattern categories]]

Template:LifeLine

2014-03-13T20:04:19Z

JWatCCI: switch to sort by volume number

{| class="infobox"
|-
| colspan="2" class="infobox_head" | [[Lifeline]] Volume {{{vol|1}}}
|-
| colspan="2" class="infobox_img" | <table class="img_border" cellpadding="0"><tr><td>[[Image:lifeline_vol_{{{vol|1}}}.png|200x220px|Lifeline Volume {{{vol|1}}}]]</td></tr></table>
|-
! Published in
| {{#if: {{{date|}}} | {{{date}}} | Unknown }}
{{#ifeq: {{{vol|1}}} | 1 | |
{{!}}-
! Preceded by
{{!}} [[Lifeline Volume {{#expr: {{{vol|1}}}-1}}|Volume {{#expr: {{{vol|1}}}-1}}]] }}
{{#ifeq: {{{vol|1}}} | 11 | |
{{!}}-
! Succeeded by
{{!}} [[Lifeline Volume {{#expr: {{{vol|1}}}+1}}|Volume {{#expr: {{{vol|1}}}+1}}]] }}
|}
{| style="border:4px solid #8BF;margin-left:auto;margin-right:auto;padding:6px" |
|-
! This page is a transcript of Volume {{{vol|1}}} of the [[Lifeline]] newsletter
|-
| This article may contain spelling mistakes and/or errors that will not be corrected -- it is preserved in this way for history's sake
|}<noinclude>

----

This template is to be placed at the top of articles that are transcriptions of [[Lifeline]] articles.

This template takes parameters:
:{|-
|'''vol'''
|The volume number of the issue (1 through 11) ''Required''
|-
|'''date'''
|The month and year that the issue was originally published
|}</noinclude><includeonly>[[Category:Lifeline issues|{{{vol|1}}}]]</includeonly>

Category:Lifeline issues

2014-03-13T20:02:52Z

JWatCCI:

This category contains electronic copies of the [[Lifeline]] magazine, a monthly newsletter by Bob Wainwright.

[[Category:Books and articles]]

Category:Snippets

2014-03-13T20:02:46Z

JWatCCI:

This category contains all article snippets that are designed for inclusion on the [[Main_Page|main page]]'s "[[Template:FeaturedArticle|Featured article]]" section.

[[Category:Toplevel category]]

Category:Speeds

2014-03-13T20:02:34Z

JWatCCI:

This category contains important [[speed]]s in [[Conway's Game of Life]].

==See also==

* [[Gemini]]

[[Category:Glossary]]

Category:UserImages

2014-03-13T20:02:17Z

JWatCCI:

This category is used for images that people have uploaded to their user pages.
[[Category:Toplevel category]]

Category:LifeLine Pages

2014-03-13T20:00:22Z

JWatCCI:

Pages from [[LifeLine]]

[[Category:Books and articles]]

Category:Images

2014-03-13T19:59:07Z

JWatCCI:

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[[Category:Toplevel category]]

Conduit

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JWatCCI:

{{Glossary}}
A '''conduit''' is an arrangement of [[still life]]s and/or [[oscillator]]s that move an active object to another location without themselves being permanently damaged. The object may be transformed into a different active object in the process, but no permanent debris may be left behind. Alternatively, [[glider]]s or other [[spaceship]]s may be emitted; they will either abandon the site of their creation, or can be absorbed by eaters. Probably the most important conduit is [[conduit 1]], in which a [[B-heptomino]] is transformed into a [[Herschel]] in 59 generations.

==Herschel conduits==

The most prolific stable conduits are those which rotate, reflect or translate a [[Herschel]] in a certain number of [[generation]]s. Oscillators of all [[period]]s => 58 can be built using these sixteen elementary conduits. All except the smallest [[stable reflector]]s use Herschel conduits, the counter-examples being the [[rectifier]] and [[boojum reflector]].

Herschel conduits can be chained in order to form a [[Herschel track]]. Karel Suhajda's search program ''Hersrch'' automates the process of building a track.

The elementary conduits are codenamed according to the final orientation of the output Herschel relative to the input Herschel, and the number of generations it takes for the output Herschel to reach the same phase as the input Herschel. For example, the R64 conduit performs a right turn in 64 generations; R designates right turn, L left turn, F flip, and x displacement:

* R64
* Fx77
* L112
* F116
* F117
* Fx119
* Bx125
* Fx153
* L156
* Fx158
* F166
* F171
* Fx176
* Lx200
* Rx202
* Bx222

Many of these use the block+snake combination (conduit 1) in order to clean up the output B-heptomino to produce an output Herschel. Dave Greene, with the invention of his [[boojum reflector]], discovered a way to remove this block using the first natural glider of the Herschel. However, these conduits are not considered 'elementary', since they contain a boojum reflector.

==See also==
* [[Herschel]]
* [[Herschel_conduit]]

==External link==
* [http://www.argentum.freeserve.co.uk/lex_c.htm#conduit Conduit] at the Life Lexicon
* [http://radicaleye.com/lifepage/patterns/bhept/bhept.html] Buckingham on B-heptominos in oscillators
* [http://radicaleye.com/lifepage/p1/p1.html] Buckingham discussing stable reflectors and Herschel tracks
* [http://radicaleye.com/lifepage/patterns/ssrefl/ssrefl.html] Stephen Silver on stable reflectors
* [http://calcyman.awardspace.co.uk/life/stable.htm] Brief summary of stable technology

[[Category:Conduits| ]]

Category:Conduits

2014-03-13T19:56:20Z

JWatCCI:

This category contains [[conduit]]s, arrangements of [[still life]]s and/or [[oscillator]]s that move an active object to another location without themselves being permanently damaged.

[[Category:Pattern categories]]