Hook with tail
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 | ||||||||||
Discovered by | Unknown | ||||||||||
Year of discovery | 1971 | ||||||||||
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Hook with tail (or snake eater) is an 8-cell still life. 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.
This still life is comprised of the normally unstable hook with a normally unstable tail attached.
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]
Glider synthesis
On April 29, 2007 Dean Hickerson found a 4-glider synthesis of this still life.[4]
Hook with tail family
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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