Cis-mirrored bun
| Cis-mirrored bun | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 14 | ||||||||
| Bounding box | 7 × 4 | ||||||||
| Frequency class | 16.9 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
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Cis-mirrored bun is a 14-cell strict still life consisting of two mutually stabilising buns. It is one of six ways in which two buns can be arranged to create a still life, and one of the five which have two separate islands.
This specific isomer is named cis-mirrored due to the two inducting faces not being skewed from each other (hence mirrored), and the "denser" parts of each island are on the same side (hence cis). As such, it is the only one of the six with mirror symmetry.
Commonness
Cis-mirrored bun is the thirty-second most common still life in Achim Flammenkamp's census, being less common than canoe but more common than moose antlers.[1] It is also the forty-second most common object on Adam P. Goucher's Catagolue.[2]
Compared to Catagolue's typical 16×16 soups, the cis-mirrored bun is 23% more common in 8×8 soups and 16% more common in 10×10 soups, as smaller soups are more likely to become symmetrical.
It is much more common in DryLife.
Glider synthesis
A four-sided 4-glider synthesis for this still life was found by Dave Buckingham and reported in September 1973.[3] Another two-stage 4-glider recipe involves two gliders hitting a bi-block.
See also
References
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
- ↑ Robert Wainwright (September 1973). Lifeline, vol 11, page 14.
External links
- Cis-mirrored bun at the Life Lexicon
- The 619 fourteen-bit still-lifes at Mark D. Niemiec's Life Page