Ship in a bottle
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| Ship in a bottle | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 86 | ||||||||
| Bounding box | 18 × 18 | ||||||||
| Period | 16 (mod: 8) | ||||||||
| Heat | 45 | ||||||||
| Volatility | 0.70 | 0.12 | ||||||||
| Kinetic symmetry | /xk | ||||||||
| Discovered by | Bill Gosper | ||||||||
| Year of discovery | 1994 | ||||||||
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Ship in a bottle is a period-16 oscillator found by Bill Gosper on August 7, 1994.[1] If the ship is removed while not being interacted with, it becomes a bottle. If a pond is placed inside instead, it becomes pond in a bottle.[2]
| A related pattern, pond in a bottle uses the pond as a rock (click above to open LifeViewer) Catagolue: here |
A 49-glider synthesis of this oscillator was found by Jeremy Tan on April 18, 2019.[3] A reduction to 48 gliders was found later by constructing a 22-bit constellation[4] with eight gliders.[5] In April 2023, the same 22-bit constellation was constructed with 7 gliders, reducing the glider cost of the ship in a bottle to 47 gliders.[6] A 45-glider synthesis was found by KtT in November 2023.[7][8]
See also
References
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- ↑ Pond in a bottle at Adam P. Goucher's Catagolue
- ↑ Jeremy Tan (April 18, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ xs22_y133z33w356x33zy133 at Adam P. Goucher's Catagolue
- ↑ Ship in a bottle (archived copy)
- ↑ shinjuku (#4045718382) (April 2, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
- ↑ KtT (November 4, 2023). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#5460047563) (November 4, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
External links
- Ship in a bottle at the Life Lexicon
- Ship in a bottle at Adam P. Goucher's Catagolue
- 86P16.2 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Oscillators with 86 cells
- Periodic objects with minimum population 86
- Patterns with 86 cells
- Patterns found by Bill Gosper
- Patterns found in 1994
- Patterns that can be constructed with 45 gliders
- Oscillators
- Oscillators with period 16
- Oscillators with mod 8
- Oscillators with heat 45
- Oscillators with volatility 0.70
- Oscillators with strict volatility 0.12
- Oscillators with /xk symmetry