Difference between revisions of "4-engine Cordership"
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{{Spaceship|name=4-engine Cordership|pname= | {{Spaceship | ||
The '''4-engine Cordership''' is a | |name = 4-engine Cordership | ||
|pname = 4enginecordership | |||
|family = Cordership | |||
|c = 134 | |||
|bx = 76 | |||
|by = 76 | |||
|dir = Diagonal | |||
|p = 96 | |||
|m = 96 | |||
|s = c/12 | |||
|z = 8c/96 | |||
|h = 178.0 | |||
|discoverer = David Bell | |||
|discoveryear = 2005 | |||
|rulemin = B3/S23 | |||
|rulemax = B3/S23 | |||
|rulespecial = [[Conway's Game of Life|Conway Life]] | |||
|isorulemin = B3/S23 | |||
|isorulemax = B3/S23 | |||
|plaintext = true | |||
|rle = true | |||
|synthesis = 14 | |||
|synthesisRLE = true | |||
|viewerconfig = #C [[ ZOOM 4 TRACKLOOP 96 -1/12 -1/12 THUMBSIZE 2 GPS 12 HEIGHT 480 WIDTH 480 ]] | |||
|apgcode = xq96_yzy1573w8aegvzyzyl33zyzytoozyzy3442cia049uo239e4zyx848xgg8ggzyx111w166473zzyi8k0szg0gyho4ooz331gy88mgy016663z8babcy6g38i1zybod1j3zy1ggy5131zy111zy9cc | |||
}} | |||
The '''4-engine Cordership''' is a [[c/12 diagonal]] [[spaceship]] that was discovered by [[David Bell]] on July 9, {{year|2005}}. It is composed of four [[switch engine]]s. It is the second smallest known [[Cordership]] in terms of its minimum population of 134 [[cell]]s, superseded by the [[2-engine Cordership]]. David Bell used this spaceship to create a small [[sawtooth]], [[sawtooth 260]].<ref>{{cite web|url=http://pentadecathlon.com/lifeNews/2005/08/new_sawtooth_patterns.html|title=New Sawtooth Patterns|author=Dave Greene|date=August 10, 2005 |accessdate=April 21, 2017}}</ref> | |||
A slight modification of this Cordership that is asymmetric, with a minimum population of 136 cells, is also quite well-known and displayed below. | A slight modification of this Cordership that is asymmetric, with a minimum population of 136 cells, is also quite well-known and displayed below. | ||
In November 2014 Michael Simkin discovered an alternate 4-engine Cordership, with temporally independent front and back halves -- the last two switch engines can be delayed by any number of ticks relative to the front.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?f=2&t=1492#p14135|title=Four engine extendable Cordership|author=Michael Simkin|date=November 5, 2014 |accessdate=April 21, 2017}}</ref> The front and back halves of the Cordership can be produced by identical glider constructions. These features were used to construct the [[infinite Corderships gun]].<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=55400#p55400|title=Re: Stable signal converters|author=Adam P. Goucher|date=January 22, 2018 |accessdate=September 15, 201}}</ref> | |||
{{EmbedViewer | |||
|viewerconfig = #C [[ AUTOSTART GPS 15 Y -10 Z 2.5 THUMBLAUNCH THUMBSIZE 2 THEME 6 WIDTH 800 HEIGHT 400 POPUPWIDTH 800 POPUPHEIGHT 400 TRACKLOOP 96 -1/12 -1/12 ]] | |||
|pname = 4enginecorderships | |||
|position = center | |||
|caption = Two versions of Michael Simkin's extensible 4-engine Cordership<br /> | |||
}} | |||
==Image gallery== | ==Image gallery== | ||
{| | {| | ||
|- | |- | ||
|[[Image:4enginecordershipb.png|framed|left|The 136-cell variant of the 4-engine Cordership.<br /> | |[[Image:4enginecordershipb.png|framed|left|The 136-cell variant of the 4-engine Cordership.<br />{{JavaRLE|4enginecordershipb|brief}}]] | ||
|} | |} | ||
==See also== | |||
*[[3-engine Cordership]] | |||
==References== | |||
<references /> | |||
==External links== | ==External links== | ||
{{LinkCatagolue|code=xq96_yzy1573w8aegvzyzyl33zyzytoozyzy3442cia049uo239e4zyx848xgg8ggzyx111w166473zzyi8k0szg0gyho4ooz331gy88mgy016663z8babcy6g38i1zybod1j3zy1ggy5131zy111zy9cc|format=extended}} | |||
{{Symmetry|diagonal2}} | |||
__NOTOC__ |
Revision as of 01:54, 11 April 2020
4-engine Cordership | |||||||||
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Pattern type | Spaceship | ||||||||
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Family | Cordership | ||||||||
Number of cells | 134 | ||||||||
Bounding box | 76 × 76 | ||||||||
Direction | Diagonal | ||||||||
Period | 96 | ||||||||
Mod | 96 | ||||||||
Speed | c/12 | 8c/96 | ||||||||
Heat | 178.0 | ||||||||
Discovered by | David Bell | ||||||||
Year of discovery | 2005 | ||||||||
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The 4-engine Cordership is a c/12 diagonal spaceship that was discovered by David Bell on July 9, 2005. It is composed of four switch engines. It is the second smallest known Cordership in terms of its minimum population of 134 cells, superseded by the 2-engine Cordership. David Bell used this spaceship to create a small sawtooth, sawtooth 260.[1]
A slight modification of this Cordership that is asymmetric, with a minimum population of 136 cells, is also quite well-known and displayed below.
In November 2014 Michael Simkin discovered an alternate 4-engine Cordership, with temporally independent front and back halves -- the last two switch engines can be delayed by any number of ticks relative to the front.[2] The front and back halves of the Cordership can be produced by identical glider constructions. These features were used to construct the infinite Corderships gun.[3]
Two versions of Michael Simkin's extensible 4-engine Cordership (click above to open LifeViewer) RLE: here Plaintext: here |
Image gallery
See also
References
- ↑ Dave Greene (August 10, 2005). "New Sawtooth Patterns". Retrieved on April 21, 2017.
- ↑ Michael Simkin (November 5, 2014). "Four engine extendable Cordership". Retrieved on April 21, 2017.
- ↑ Adam P. Goucher (January 22, 2018). "Re: Stable signal converters". Retrieved on September 15, 201.
External links
- 4-engine Cordership at Adam P. Goucher's Catagolue (extended)
- Patterns
- Spaceships with between 130 and 139 cells
- Periodic objects with minimum population between 130 and 139
- Patterns with between 130 and 139 cells
- Patterns found by David Bell
- Patterns found in 2005
- Patterns that can be constructed with 14 gliders
- Outer-totalistically endemic patterns
- Isotropically endemic patterns
- Spaceships
- Spaceships with period 96
- Diagonal spaceships
- Spaceships with speed c/12
- Spaceships with unsimplified speed 8c/96
- Spaceships with heat between 170 and 179
- Cordership variants
- Spaceships with mod 96
- Patterns with bilateral diagonal symmetry