Hook with tail
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| Hook with tail | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 8 | ||||||||
| Bounding box | 5 × 4 | ||||||||
| Frequency class | 20.5 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
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Hook with tail (or snake eater) is an 8-cell still life consisting of a hook with a tail. Despite it being reported on Lifeline early on,[1] it was for a long time the smallest still life without a well-established name. It can act as a rock in two ways, one using the tail like snake, the other using the hook as shown below in Gallery.
Commonness
Hook with tail is the sixty-ninth most common still life in Achim Flammenkamp's census, being less common than loaf siamese loaf but more common than long integral[2] It is also the eightieth most common object on Adam P. Goucher's Catagolue, making it the rarest of the 8-bit still lifes.[3]
Synthesis
On April 29, 2007 Dean Hickerson found a 4-glider synthesis of this still life.[4]
Gallery
| An example of the hook with tail being used as a rock in a period-14 oscillator found by Matthias Merzenich in 2014 (click above to open LifeViewer) RLE: here Plaintext: here |
See also
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 November 8, 2009.
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
- ↑ Dean Hickerson's 2, 3, and 4-glider syntheses pattern collection
External links
- Hook with tail at the Life Lexicon
- The 9 eight-bit still-lifes at Mark D. Niemiec's Life Page