4-engine Cordership: Difference between revisions
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The '''4-engine Cordership''' is a diagonal [[:Category:Spaceships with speed c/12|c/12]] [[spaceship]] that was discovered by [[:Category:Patterns found by David Bell|David Bell]] on July 9, [[:Category:Patterns found in 2005|2005]]. It is the smallest known [[Cordership]] in terms of its minimum population of 134 [[cell]]s. 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> | The '''4-engine Cordership''' is a diagonal [[:Category:Spaceships with speed c/12|c/12]] [[spaceship]] that was discovered by [[:Category:Patterns found by David Bell|David Bell]] on July 9, [[:Category:Patterns found in 2005|2005]]. It is the second smallest known [[Cordership]] in terms of its minimum population of 134 [[cell]]s, superseded by the [[2-engine Cordership]].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. | ||
Revision as of 16:07, 1 January 2018
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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 | Unknown | ||||||||
| Heat | 178.0 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | David Bell | ||||||||
| Year of discovery | 2005 | ||||||||
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The 4-engine Cordership is a diagonal c/12 spaceship that was discovered by David Bell on July 9, 2005. It is the second smallest known Cordership in terms of its minimum population of 134 cells, superseded by the 2-engine Cordership.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]
Image gallery
 RLE: here |
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.
External links
- 4-engine Cordership at Adam P. Goucher's Catagolue (extended)
Categories:
- 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
- Spaceships
- Spaceships with period 96
- Diagonal spaceships
- Spaceships with speed c/12
- Spaceships with heat between 170 and 179
- Cordership variants
- Spaceships with mod 96