7-engine Cordership: Difference between revisions

From LifeWiki
Jump to navigation Jump to search
← Older edit
Neocaridina (talk | contribs)
4,347 edits
No edit summary
Neocaridina (talk | contribs)
4,347 edits
No edit summary
 
(28 intermediate revisions by 12 users not shown)
Line 1: Line 1:
{{Spaceship|type=Cordership|name=7-engine Cordership|pname=7enginecordership|dir=Diagonal|h=196.3|p=96|s=c/12|c=180|bx=71|by=65|discoverer=Dean Hickerson|discoveryear=1993|life105=true|life106=true|plaintext=true|rle=true}}
{{Spaceship
The '''7-engine Cordership''' is a diagonal [[spaceship]] that was discovered by [[:Category:Patterns found by Dean Hickerson|Dean Hickerson]] on August 23, [[:Category:Patterns found in 1993|1993]]. Until the discovery of the [[6-engine Cordership]] almost five years later, it was the [[Cordership]] that used the fewest known possible [[switch engine]]s. Corderships that use as few as [[3-engine Cordership|3 engines]] are now known.
|name             = 7-engine Cordership
|pname           = 7enginecordership
|family          = Cordership
|c                = 180
|bx              = 71
|by              = 65
|dir             = Diagonal
|p                = 96
|m                = 48
|s               = c/12
|z                = 8c/96
|h                = 196.3
|symmetry        = n/
|discoverer       = Dean Hickerson
|discoveryear     = 1993
|rulemin          = B3/S23
|rulemax          = B3/S23
|isorulemin      = B3/S23
|isorulemax      = B3/S23
|plaintext       = true
|rle             = true
|viewerconfig    = #C [[ TRACKLOOP 96 -1/12 -1/12 THUMBSIZE 2 GPS 12 HEIGHT 480 WIDTH 480 ZOOM 4 ]]
|apgcode          = xq96_yi33zyaooydgs2iczyr77866zy266yrgcc0q996zyyg0j33z0gs8ogyrk1087zxoe2yzybo44oze0333yjg8048gyjeehdc1y1oozyi4aha40782hnezyfg0gyho88gy966zy8ggn723110d74y0oggy6c1g066y1ggzyn11gt5y7137y211zyms0676y8111
|pentadecathlonid = 180P96H8V8.1
|eppsteinid      = 21362
}}
The '''7-engine Cordership''' is a [[c/12 diagonal]] [[spaceship]] that was discovered by [[Dean Hickerson]] on August 14, {{year|1993}}. Until the discovery of the [[6-engine Cordership]] almost five years later, it was the [[Cordership]] that used the fewest known possible [[switch engine]]s. Corderships that use as few as [[2-engine Cordership|2 engines]] are now known.


This particular Cordership can be used to reflect [[glider]]s in a variety of ways. The image below shows two gliders that will be turned counterclockwise by 90 degrees (in red), a glider that will be reflected 180 degrees (in green), and a glider that will be turned into a southbound [[lightweight spaceship]] (in blue).<ref>[[Alan Hensel]]'s [http://www.ibiblio.org/lifepatterns/ lifep.zip pattern collection].</ref> For another method of performing a 180-degree glider reflection using the 7-engine Cordership, see [[glider loop]].
This particular Cordership can be used to reflect [[glider]]s in a variety of ways. The image below shows two gliders that will be turned counterclockwise by 90 degrees (in red), a glider that will be reflected 180 degrees (in green), and a glider that will be turned into a southbound [[lightweight spaceship]] (in blue).<ref>[[Alan Hensel]]'s [http://www.ibiblio.org/lifepatterns/ lifep.zip pattern collection].</ref><ref>{{LinkCallahan|patterns/corder2.html|patternname=corder2.lif}}</ref> For another method of performing a 180-degree glider reflection using the 7-engine Cordership, see [[glider loop]].


[[Image:7enginecordership_reflections.png|framed|center|Gliders about to be reflected off of the ship<br />red:90˚, green:180˚, blue:45˚
[[File:7enginecordership reflections.png|thumb|center|Gliders about to be reflected off of the ship{{br}}red:90˚, green:180˚, blue:45˚
{{JavaRLE|7enginecordershipreflections|brief}}]]
{{JavaRLE|7enginecordershipreflections|brief}}]]


==See also==
== See also ==
*[[7-in-a-row Cordership]]
* {{CategoryLink|Cordership variants}}
*[[Sawtooth 362]]
* [[Sawtooth 362]]
* [[Caber tosser 1]]


==References==
== References ==
<references />
<references />


==External links==
== External links ==
*[http://www.math.ntnu.edu.tw/act/math_camp/Lab/Life/corder2.html 7-engine Cordership] at the Life Pattern Catalog
* {{LinkCatagolue|xq96_yi33zyaooydgs2iczyr77866zy266yrgcc0q996zyyg0j33z0gs8ogyrk1087zxoe2yzybo44oze0333yjg8048gyjeehdc1y1oozyi4aha40782hnezyfg0gyho88gy966zy8ggn723110d74y0oggy6c1g066y1ggzyn11gt5y7137y211zyms0676y8111|format=extended}}
* {{LinkPentadecathlonObject|180P96H8V8.1}}
<!-- * {{LinkEppstein|21362|patternname=The Cordership (glider 21362)}} The Cordership (glider 21362) at David Eppstein's Glider Database http://fano.ics.uci.edu/ca/gliders/g21362.html -->
* {{LinkEppsteinRule|rule=b3s23|rulename=Life (B3/S23)|archivedate=20160309235206}} <!-- The Cordership (glider 21362), size 70x64, speed c/12, diagonal, period 96 -->
 
[[Category:Engineered spaceships]]
[[Category:Non-monotonic spaceships]]
[[Category:Patterns involving switch engines]]

Latest revision as of 20:28, 17 January 2026

7-engine Cordership
27bobo41b$26bo44b$27bo2bo40b$29bobo39b$32bo11b3o24b$31b3o37b$31bo39b$ 29b2o40b$31bo13b3o23b$14bo14bo2bo12b3o5b2o16b$13bobo13bobo13b2o6b2o16b $29bo14bo26b$13bo2bo3bob3o17b2o2bo24b$15bo4bo22bo3bo23b$16bob2obobo19b o2bo24b$17b2o3bo21b3o24b$18bo52b$61b2o8b$61b2o8b2$25bo45b$25bo5b3o37b$ 24bobo3b2o2bo36b$25bo3bo5bo35b$25bo3bo41b$30bo2b2o25bo8b2o$bobo27b2o 26bobo7b2o$o58bobo9b$bo2bo54bo2bo8b$3bobo54bobo8b$6bo56bo7b$5b3o54b2o 7b$5bo56bo8b$3b2o66b$5bo65b$3bo2bo31bo32b$3bobo31bob2o30b$3bo36b2o29b$ 35bo6bo28b$34bo3b4o29b$35bo4bo30b4$41b3o27b$40bo3bo26b$41b2o28b$7b2o 34b2ob2o23b$7b2o36b2o24b3$34bo36b$33bobo35b$33bobo35b$33bo2bo34b$15b2o 17bobo34b$15b2o20bo33b$36b2o33b$36bo34b5$23b2o46b$23b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ TRACKLOOP 96 -1/12 -1/12 THUMBSIZE 2 GPS 12 HEIGHT 480 WIDTH 480 ZOOM 4 ]]
View static image
Pattern type Spaceship
Family Cordership
Number of cells 180
Bounding box 71 × 65
Direction Diagonal
Period 96 (mod: 48)
Speed c/12 | 8c/96
Heat 196.3
Kinetic symmetry n/
Discovered by Dean Hickerson
Year of discovery 1993

The 7-engine Cordership is a c/12 diagonal spaceship that was discovered by Dean Hickerson on August 14, 1993. Until the discovery of the 6-engine Cordership almost five years later, it was the Cordership that used the fewest known possible switch engines. Corderships that use as few as 2 engines are now known.

This particular Cordership can be used to reflect gliders in a variety of ways. The image below shows two gliders that will be turned counterclockwise by 90 degrees (in red), a glider that will be reflected 180 degrees (in green), and a glider that will be turned into a southbound lightweight spaceship (in blue).[1][2] For another method of performing a 180-degree glider reflection using the 7-engine Cordership, see glider loop.

Gliders about to be reflected off of the ship
red:90˚, green:180˚, blue:45˚ RLE: here

See also

References

  1. ↑ Alan Hensel's lifep.zip pattern collection.
  2. ↑ corder2.lif at Paul Callahan's Page of Conway's Life Miscellany
Retrieved from "https://conwaylife.com/w/index.php?title=7-engine_Cordership&oldid=168303"