Long ship
| Long ship | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 8 | ||||||||
| Bounding box | 4 × 4 | ||||||||
| Frequency class | 13.3 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | JHC group | ||||||||
| Year of discovery | 1970 | ||||||||
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Long ship is an 8-cell still life discovered by the JHC group in 1970[1] and is a longer version of the ship.
Long ship is the smallest still life by bounding box for which there is no clean one-glider destruction. In terms of population it ties with canoe.[2]
Commonness
Long ship is the seventeenth most common still life on Adam P. Goucher's Catagolue, being less common than paperclip but more common than integral sign. Among all still lifes with 8 cells, it is the fourth most common, being less common than long barge but more common than shillelagh.[3] It is also the twenty-fourth most common object overall on Catagolue.
Long ship was also the seventeenth most common still life in Achim Flammenkamp's census, being less common than paperclip, but more common than shillelagh.[4]
Occurrence
A long ship can be created when a traffic light predecessor hits a tub. By itself, it does not survive long, but it can survive in a soup if there are nearby active regions.
| The reaction described above (click above to open LifeViewer) RLE: here Plaintext: here |
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.
In other rules
Unlike the regular ship, this survives in HighLife due to the lack of any B6 regions.
References
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on June 18, 2009.
- ↑ gameoflifeboy (November 6, 2015). Re: Gustavo Ramos Rehermann's patterns (discussion thread) at the ConwayLife.com forums
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
External links
- Long ship at the Life Lexicon
- The 9 eight-bit still-lifes at Mark D. Niemiec's Life Page
- Patterns
- Patterns with Catagolue frequency class 13
- Natural periodic objects
- Periodic objects with minimum population 8
- Patterns with 8 cells
- Patterns found by JHC group
- Patterns found in 1970
- Patterns that can be constructed with 4 gliders
- Still lifes
- Strict still lifes
- Strict still lifes with 8 cells
- Patterns with rectangular diagonal symmetry