Cis-very long hook with nine
| Cis-very long hook with nine | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 12 | ||||||||
| Bounding box | 7 × 5 | ||||||||
| Frequency class | 32.1 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | Robert Wainwright Everett Boyer | ||||||||
| Year of discovery | 1973 | ||||||||
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Cis-very long hook with nine is a 12-cell still life.
This still life is comprised of the normally unstable very long hook with a normally unstable nine attached. This is one of two possible isomers, named cis due to the corner part of the hook being closer to the nine; the other isomer, trans-very long hook with nine, has this corner part slightly farther.
Unlike the trans-version, the cis-very long hook with nine is the smallest way in which a hook of a given length can have a nine attached to it - shrinking the length of the hook would result in unwanted births and as such the configuration would no longer be a still life.
It can be substitutively referred to as the integral with cis-very long hook, with one pre-block of the integral sign replaced with a very long hook, however "cis-very long hook with nine" is usually preferred for this object.
Among the 121 still lifes with 12 cells, this is the 87th most common still life according to Catagolue.
A 7-glider synthesis of this still life was found in March 2021.[1]
References
- ↑ Tanner Jacobi (March 15, 2021). Re: n-in-m: A Collection of Efficient Synthesis Projects (discussion thread) at the ConwayLife.com forums
External links
- Cis-very long hook with nine at Adam P. Goucher's Catagolue
- The 121 twelve-bit still-lifes at Mark D. Niemiec's Life Page (12.41)
- 12.22 at Heinrich Koenig's Game of Life Object Catalogs
- Patterns
- Patterns with Catagolue frequency class 32
- Natural periodic objects
- Periodic objects with minimum population 12
- Patterns with 12 cells
- Patterns found by Robert Wainwright
- Patterns found by Everett Boyer
- Patterns found in 1973
- Patterns that can be constructed with 6 gliders
- Still lifes
- Strict still lifes
- Strict still lifes with 12 cells