C/5 diagonal: Difference between revisions
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DroneBetter (talk | contribs) m add note of discovery of Tim Coe's spaceship (which is both the thinnest by width and second smallest by population) and LifeViewer embed (would not be necessary if it had a page of its own, however I'm not sure whether it is notable enough), approximately bisecting the approximate decade gap in the history |
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==Spaceships== | ==Spaceships== | ||
The first c/5 diagonal [[spaceship]] to be discovered was [[295P5H1V1]] and was found by [[Jason Summers]] on November 22, {{year|2000}}.<ref>{{CiteSummersPattern|name=jslife}}</ref> No other spaceships of this speed were discovered until January 8, {{year|2005}}, when Jason Summers found the much smaller [[86P5H1V1]].<ref>{{LinkGoLNews|2005/01/new_diagonal_c5_spaceship.html|title=New Diagonal c/5 Spaceship|date=January 09, 2005|author=Heinrich Koenig}}</ref> In July {{year|2006}} [[Nicolay Beluchenko]] discovered three new c/5 diagonal spaceships, including the [[asymmetric]] [[67P5H1V1]].<ref>{{LinkGoLNews|2006/07/new_c5_diagonal_spaceships_1.html|title=New c/5 Diagonal Spaceships|date=July 15, 2006|author=Heinrich Koenig}}</ref> The smallest known c/5 diagonal spaceship, [[58P5H1V1]], was discovered by [[Matthias Merzenich]] on September 5, {{year|2010}}.<ref name="pd20110126" /> | The first c/5 diagonal [[spaceship]] to be discovered was [[295P5H1V1]] and was found by [[Jason Summers]] on November 22, {{year|2000}}.<ref>{{CiteSummersPattern|name=jslife}}</ref> No other spaceships of this speed were discovered until January 8, {{year|2005}}, when Jason Summers found the much smaller [[86P5H1V1]].<ref>{{LinkGoLNews|2005/01/new_diagonal_c5_spaceship.html|title=New Diagonal c/5 Spaceship|date=January 09, 2005|author=Heinrich Koenig}}</ref> In July {{year|2006}} [[Nicolay Beluchenko]] discovered three new c/5 diagonal spaceships, including the [[asymmetric]] [[67P5H1V1]].<ref>{{LinkGoLNews|2006/07/new_c5_diagonal_spaceships_1.html|title=New c/5 Diagonal Spaceships|date=July 15, 2006|author=Heinrich Koenig}}</ref> The smallest known c/5 diagonal spaceship, [[58P5H1V1]], was discovered by [[Matthias Merzenich]] on September 5, {{year|2010}}.<ref name="pd20110126" /> | ||
On December 18, 2015, [[Tim Coe]] discovered the orthogonally thinnest possible c/5 diagonal ship,<ref name="post25972" /> whose bounding box over six iterations (from one phase to itself displaced by (1,1)) spans a width of 13, which is also the second smallest, with a minpop of 63. | |||
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2b3o$bo$o5bo$o5bo$b2obo$3o2bob2o$bo5bo$8bo$b2o$3o$o3b2o$3o$2o7b2o$bo5bo3bo$b2obob2o2bo$bo4bo$2bo4bo2bo$7bobo$6bob2o$6bobo$7b2o$8bo$8bo$7bo$8b2o! | |||
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|caption = | |||
|viewerconfig = #C [[ THUMBSIZE 3 ZOOM 32 WIDTH 560 HEIGHT 980 THEME Book TRACK -1/5 -1/5 GPS 5 AUTOSTART ]] | |||
|apgcode = xq5_cih1h0czhrpw1035z7ui0h1go04k8z012xp6oc2zy39ng | |||
}} | |||
After a gap of several years, on March 26-27, {{year|2020}}, [[AforAmpere]] found new c/5 diagonal ships with a different shape from previous discoveries.<ref name="post92434" /> | After a gap of several years, on March 26-27, {{year|2020}}, [[AforAmpere]] found new c/5 diagonal ships with a different shape from previous discoveries.<ref name="post92434" /> | ||
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==References== | ==References== | ||
<references> | <references> | ||
<ref name="post25972">{{LinkForumThread | |||
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|title = Re: 3c/7 othogonal and 2c/9 diagonal spaceships | |||
|f = 2 | |||
|t = 1834 | |||
|p = 25972 | |||
|author = moebius | |||
|date = December 18, 2015 | |||
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<ref name="post92434">{{LinkForumThread | <ref name="post92434">{{LinkForumThread | ||
|format = ref | |format = ref | ||
Revision as of 16:48, 26 February 2024
| c/5 diagonal | ||
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| Spaceship | Yes | |
|---|---|---|
| Puffer | Yes | |
| Rake | Yes | |
| Wickstretcher | Yes | |
| Gun | Yes | |
c/5 diagonal is a diagonal speed that is equivalent to one fifth of the speed of light.
Spaceships
The first c/5 diagonal spaceship to be discovered was 295P5H1V1 and was found by Jason Summers on November 22, 2000.[1] No other spaceships of this speed were discovered until January 8, 2005, when Jason Summers found the much smaller 86P5H1V1.[2] In July 2006 Nicolay Beluchenko discovered three new c/5 diagonal spaceships, including the asymmetric 67P5H1V1.[3] The smallest known c/5 diagonal spaceship, 58P5H1V1, was discovered by Matthias Merzenich on September 5, 2010.[4]
On December 18, 2015, Tim Coe discovered the orthogonally thinnest possible c/5 diagonal ship,[5] whose bounding box over six iterations (from one phase to itself displaced by (1,1)) spans a width of 13, which is also the second smallest, with a minpop of 63.
| (click above to open LifeViewer) Catagolue: here |
After a gap of several years, on March 26-27, 2020, AforAmpere found new c/5 diagonal ships with a different shape from previous discoveries.[6]
The first glider synthesis for a c/5 diagonal spaceship (58P5H1V1) was found by Goldtiger997 and Tanner Jacobi in April 2020.[7][8]
Puffers
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The first c/5 diagonal puffer was built by Matthias Merzenich on September 5, 2010.[4] It consists of four copies of 58P5H1V1 continually hassling a glider, leaving debris behind at a period of 1450.
A period-1540 glide-symmetric three-ship puffer was discovered by Peter Naszvadi in March 2020.[9]
Rakes
The first clean c/5 diagonal rake was constructed by Matthias Merzenich on September 7, 2010.[4] The rake has a period of 1585 and works by circulating two gliders. Alternative rake designs were constructed by Merzenich and Adam P. Goucher. The lowest period so far achieved for a c/5 diagonal rake is 85.[10]
Wickstretchers
The first c/5 diagonal wickstretcher was found by Matthias Merzenich on January 26, 2011.[4] It consists of a tagalong pulled by two copies of 58P5H1V1 that stretches two tubs.
Guns
On May 22, 2020, Entity Valkyrie constructed a period-2760 58P5H1V1 gun.[11]
See also
- c/5 orthogonal
- Speeds (category)
- Spaceships with speed c/5 (category)
- Puffers with speed c/5 (category)
References
- ↑ Jason Summers' jslife pattern collection.
- ↑ New Diagonal c/5 Spaceship at Game of Life News. Posted by Heinrich Koenig on January 09, 2005.
- ↑ New c/5 Diagonal Spaceships at Game of Life News. Posted by Heinrich Koenig on July 15, 2006.
- ↑ 4.0 4.1 4.2 4.3 New c/5 diagonal technology at Game of Life News. Posted by Adam P. Goucher on January 26, 2011.
- ↑ moebius (December 18, 2015). Re: 3c/7 othogonal and 2c/9 diagonal spaceships (discussion thread) at the ConwayLife.com forums
- ↑ AforAmpere (March 26, 2020). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Tanner Jacobi (April 2, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Goldtiger997 (April 3, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Peter Naszvadi (March 27, 2020). Re: Thread For Your Useless Discoveries (discussion thread) at the ConwayLife.com forums
- ↑ Matthias Merzenich (September 9, 2015). Re: Switchable gun? (discussion thread) at the ConwayLife.com forums
- ↑ Entity Valkyrie (May 22, 2020). Re: Construction practice (discussion thread) at the ConwayLife.com forums
External links
- c/5 spaceship at the Life Lexicon