Difference between revisions of "Eater 4"
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|isorulemin = B/S2-cn3knry | |isorulemin = B/S2-cn3knry | ||
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'''Eater 4''' is an [[eater]] that was found by [[David Buckingham]] in {{year|1971}}, but was not recognized as an eater until 1975 or 1976. It can't eat [[glider]]s, but it can be used for | '''Eater 4''' is an [[eater]] that was found by [[David Buckingham]] in {{year|1971}},{{citation needed}} but was not recognized as an eater until 1975 or 1976. It can't eat [[glider]]s, but it can be used in some [[hassler]]s, for example a variant of the [[p29 pre-pulsar shuttle]]. The four northeast-most center cells regrow in a few generations after being destroyed by taking a bite out of something. See for example the [[L122]] [[Herschel conduit]]. | ||
On January 7, {{year|2020}}, [[Jeremy Tan]] found a {{gliders|14}} [[synthesis]] of this still life.<ref name="post87094" /> | |||
==See also== | ==See also== | ||
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*[[Eater 3]] | *[[Eater 3]] | ||
*[[Eater 5]] | *[[Eater 5]] | ||
==References== | |||
<references> | |||
<ref name="post87094">{{LinkForumThread | |||
|format = ref | |||
|title = Re: Soup-based syntheses | |||
|p = 87094 | |||
|author = Jeremy Tan | |||
|date = January 7, 2020 | |||
}}</ref> | |||
</references> | |||
==External links== | ==External links== | ||
Revision as of 14:39, 22 July 2020
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| Pattern type | Strict still life Eater | ||||||||
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| Number of cells | 40 | ||||||||
| Bounding box | 14 × 14 | ||||||||
| Discovered by | David Buckingham | ||||||||
| Year of discovery | 1971 | ||||||||
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Eater 4 is an eater that was found by David Buckingham in 1971,[citation needed] but was not recognized as an eater until 1975 or 1976. It can't eat gliders, but it can be used in some hasslers, for example a variant of the p29 pre-pulsar shuttle. The four northeast-most center cells regrow in a few generations after being destroyed by taking a bite out of something. See for example the L122 Herschel conduit.
On January 7, 2020, Jeremy Tan found a 14-glider synthesis of this still life.[1]
See also
References
- ↑ Jeremy Tan (January 7, 2020). Re: Soup-based syntheses (discussion thread) at the ConwayLife.com forums
External links
- Eater 4 at the Life Lexicon
Categories:
- Patterns
- Periodic objects with minimum population 40
- Patterns with 40 cells
- Patterns found by David Buckingham
- Patterns found in 1971
- Patterns that can be constructed with 14 gliders
- Still lifes
- Strict still lifes
- Strict still lifes with 40 cells
- Eaters
- Patterns with bilateral diagonal symmetry
- Semi-natural periodic objects