Cis-boat with tail
| Cis-boat with tail | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 9 | ||||||||
| Bounding box | 5 × 5 | ||||||||
| Frequency class | 19.0 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | 1971 | ||||||||
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Cis-boat with tail is a 9-cell still life. It was found in 1971.[1]
This still life is comprised of the normally stable boat with a normally unstable tail attached. This is one of two possible isomers, named cis due to the corner part of the boat being closer to the tail; the other isomer, trans-boat with tail, has this corner part facing outwards.
The cis-boat with tail, combined with a snake or anything that catalyses the same way, is a catalyst called the "gourmet catalyst", as it's used in the oscillator gourmet, specifically as a PT8P.
Commonness
Cis-boat with tail is the forty-second most common still life in Achim Flammenkamp's census, being less common than fourteener but more common than long snake.[2]. It is also the fifty-fourth most common object on Adam P. Goucher's Catagolue.[3] Compared to the trans-boat with tail, the cis-boat with tail is about 1/17 as common.
Glider synthesis
All strict still lifes with a population of 22 or fewer cells, all oscillators with 16 or fewer cells, and all spaceships with 31 or fewer cells are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right.
References
- ↑ Robert Wainwright (September 1971). Lifeline, vol 3, page 2.
- ↑ 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.
External links
- Cis-boat with tail at the Life Lexicon
- The 10 nine-bit still-lifes at Mark D. Niemiec's Life Page