Difference between revisions of "Spider"
Jump to navigation
Jump to search
(updated synthesis) |
(updated synthesis) |
||
(11 intermediate revisions by the same user not shown) | |||
Line 18: | Line 18: | ||
|isorulemin = B3/S23-cy | |isorulemin = B3/S23-cy | ||
|isorulemax = B34cekq5e6c8/S234ceq5-ciqr6acn7c8 | |isorulemax = B34cekq5e6c8/S234ceq5-ciqr6acn7c8 | ||
|synthesis = | |synthesis = 261 | ||
|synthesisRLE = true | |synthesisRLE = true | ||
|plaintext = true | |plaintext = true | ||
Line 28: | Line 28: | ||
|eppsteinid = 18216 | |eppsteinid = 18216 | ||
}} | }} | ||
'''Spider''' is | '''Spider''' is a [[c/5 orthogonal]] [[spaceship]] that was discovered by [[David Bell]] in April {{year|1997}}. It is the smallest known c/5 orthogonal spaceship. Its side [[spark]]s have proven to be very useful in constructing [[puffer]]s and [[rake]]s. | ||
On March 7, {{year|2019}}, [[Martin Grant]] found a 601-glider [[ | On March 7, {{year|2019}}, [[Martin Grant]] found a 601-glider [[synthesis]] of spider, making it the first c/5 orthogonal spaceship to be synthesized.<ref name="post72705" /> Optimizations have since been found to reduce the glider count.<ref name="post76321" /><ref name="post86121" /><ref name="post87949" /> A spider [[gun]] was constructed by [[Entity Valkyrie]] on January 26, {{year|2020}}.<ref name="post88186" /> | ||
==See also== | ==See also== | ||
Line 58: | Line 58: | ||
|author = Goldtiger997 | |author = Goldtiger997 | ||
|date = December 9, 2019 | |date = December 9, 2019 | ||
}}</ref> | |||
<ref name="post87949">{{LinkForumThread | |||
|format = ref | |||
|title = Re: Small Spaceship Syntheses | |||
|p = 87949 | |||
|author = Tanner Jacobi | |||
|date = January 22, 2020 | |||
}}</ref> | |||
<ref name="post88186">{{LinkForumThread | |||
|format = ref | |||
|title = Re: Small Spaceship Syntheses | |||
|p = 88186 | |||
|author = Entity Valkyrie | |||
|date = January 26, 2020 | |||
}}</ref> | }}</ref> | ||
</references> | </references> |
Revision as of 20:57, 30 January 2020
Spider | |||||||||||
View animated image | |||||||||||
View static image | |||||||||||
Pattern type | Spaceship | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Number of cells | 58 | ||||||||||
Bounding box | 27 × 8 | ||||||||||
Direction | Orthogonal | ||||||||||
Period | 5 | ||||||||||
Mod | 5 | ||||||||||
Speed | c/5 | c/5 | ||||||||||
Heat | 53.6 | ||||||||||
Discovered by | David Bell | ||||||||||
Year of discovery | 1997 | ||||||||||
| |||||||||||
| |||||||||||
| |||||||||||
|
Spider is a c/5 orthogonal spaceship that was discovered by David Bell in April 1997. It is the smallest known c/5 orthogonal spaceship. Its side sparks have proven to be very useful in constructing puffers and rakes.
On March 7, 2019, Martin Grant found a 601-glider synthesis of spider, making it the first c/5 orthogonal spaceship to be synthesized.[1] Optimizations have since been found to reduce the glider count.[2][3][4] A spider gun was constructed by Entity Valkyrie on January 26, 2020.[5]
See also
References
- ↑ Martin Grant (March 7, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Jeremy Tan (May 18, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Goldtiger997 (December 9, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Tanner Jacobi (January 22, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Entity Valkyrie (January 26, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
External links
- Spider at the Life Lexicon
- The Spider (glider 18216) at David Eppstein's Glider Database
- 58P5H1V0.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Spaceships with 58 cells
- Periodic objects with minimum population 58
- Patterns with 58 cells
- Patterns found by David Bell
- Patterns found in 1997
- Patterns that can be constructed with between 200 and 299 gliders
- Spaceships
- Spaceships with period 5
- Orthogonal spaceships
- Spaceships with speed c/5
- Spaceships with unsimplified speed c/5
- Spaceships with heat 53
- Spaceships with mod 5
- Patterns with bilateral orthogonal symmetry