Boat-tie
| Boat-tie | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 10 | ||||||||
| Bounding box | 6 × 6 | ||||||||
| Frequency class | 13.7 | ||||||||
| Static symmetry | xk (D4_x4) | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | 1972 | ||||||||
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Boat-tie (or boat tie boat) is a 10-cell still life whose name is a pun on "bow tie" and is a combination of two boats.
Occurrence
Boat-tie is the twentieth most common still life on Adam P. Goucher's Catagolue, being less common than shillelagh but more common than snake. Among all still lifes with 10 cells, it is the absolute most common, followed by very long ship.[1] It is also the twenty-seventh most common object overall on Catagolue.
Boat-tie is also the twentieth most common still life in Achim Flammenkamp's census, being less common than integral sign but more common than snake.[2]
Two copies of boat-tie can be seen in a symmetric constellation that evolves from two traffic light predecessors. This constellation is in the ash (Catagolue: here) of a 3-glider collision that is essentially a glider crashing into a B-heptomino.
| Two T-tetrominoes react to make two copies of boat-tie and four blinkers. Other traffic light predecessors also work (click above to open LifeViewer) RLE: here Plaintext: here |
Glider synthesis
- Main article: Glider synthesis
There is a 3-glider collision that produces a constellation of a boat-tie and a loaf (Catagolue: here), leading to a two-stage 4-glider synthesis for the still life. Other 4-glider collisions that make a clean boat-tie are also known.
See also
References
- ↑ 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 November 7, 2009.
External links
- Boat-tie at Adam P. Goucher's Catagolue
- Boat-tie at the Life Lexicon
- The 25 ten-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 10/10-24.rle)
- Patterns
- Patterns with Catagolue frequency class 13
- Natural periodic objects
- Periodic objects with minimum population 10
- Patterns with 10 cells
- Patterns found in 1972
- Patterns that can be constructed with 4 gliders
- Still lifes
- Strict still lifes
- Strict still lifes with 10 cells
- Strict still lifes with xk symmetry