Claw at claw
| Claw at claw | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 12 | ||||||||
| Bounding box | 6 × 6 | ||||||||
| Frequency class | 22.8 | ||||||||
| Static symmetry | / | ||||||||
| Discovered by | Robert Wainwright Everett Boyer | ||||||||
| Year of discovery | 1973 | ||||||||
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Claw at claw or inverted double claw[1] is a 12-cell still life.
Construction
| A 5G synthesis[1] (click above to open LifeViewer) |
The claw at claw is the most common 12-cell still life without a known 4-glider synthesis. The cheapest known recipe requires five gliders.[1] Alternate syntheses can be found in Mark Niemiec's database.[2]
Commonness
It is the 116th most common still life on Adam P. Goucher's Catagolue, being less common than trans-bun bridge loaf but more common than big S with tub. It is the 16th most common still life with 12 cells, being less common than trans-mango with tail but more common than ship tie snake.
In diagonal symmetries, including 8-fold symmetries, it is much more common, becoming the third or fourth (depending on the specific symmetry) most common 12-cell still life.
This still life occurs in final patterns of two collisions in the octo3obj database; both collisions are shown below.
| The two collisions from the octo3obj database with claw at claw in the ash (click above to open LifeViewer) |
Formation
The two collisions and the 5G synthesis shown above have the claw at claw form by modifying a bakery:
| (click above to open LifeViewer) |
See also
References
- ↑ 1.0 1.1 1.2 xs12_g4q453z11 at Adam P. Goucher's Catagolue
- ↑ The 121 twelve-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 12/12-102.rle)
External links
- Claw at claw at Adam P. Goucher's Catagolue
- 12.52 at Heinrich Koenig's Game of Life Object Catalogs
- Patterns
- Patterns with Catagolue frequency class 22
- Natural periodic objects
- Periodic objects with minimum population 12
- Patterns with 12 cells
- Patterns found by Robert Wainwright
- Patterns found by Everett Boyer
- Patterns found in 1973
- Patterns that can be constructed with 5 gliders
- Still lifes
- Strict still lifes
- Strict still lifes with 12 cells
- Strict still lifes with / symmetry