Gourmet
| Gourmet | |||||||||
| View animated image | |||||||||
| View static image | |||||||||
| Pattern type | Oscillator | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Oscillator type | Shuttle | ||||||||
| Number of cells | 66 | ||||||||
| Bounding box | 20 × 20 | ||||||||
| Period | 32 (mod: 8) | ||||||||
| Heat | 6.3 | ||||||||
| Volatility | 0.60 | 0.60 | ||||||||
| Kinetic symmetry | nrk | ||||||||
| Discovered by | David Buckingham | ||||||||
| Year of discovery | 1978 | ||||||||
| |||||||||
| |||||||||
| |||||||||
| |||||||||
Gourmet is a period-32 oscillator that was discovered by David Buckingham on March 4, 1978.[1] In terms of its 66 cells, it was formerly the smallest known period 32 oscillator until the discovery of the p32 honey farm hassler in 2021. It consists of four PT8P (each consisting of a cis-boat with tail and an aircraft carrier) hassling a pi-heptomino.
Despite gourmet's similarity with Tanner's p46, the latter was not discovered until 2017.
Gallery
| An alternate form of gourmet using beacons and snakes instead of aircraft carriers (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here |
| An alternate stabilization of this oscillator, named pi portraitor, found by Robert Wainwright in 1984 or 1985,[1] using welded heavyweight emulators instead of stable catalysts (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here |
| Another alternate stabilization, named popover, found by Robert Wainwright in August 1984,[1] using blinkers and loaf spin catalysts (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here |
| Popover variant based on eater 2, which has a lower period and is thus preferred as a catalyst. (click above to open LifeViewer) Catagolue: here |
| Similar-looking dependent reflector loop using 4 copies of PT8P and 4 pi-heptominoes. Unlike the others, this is period 20. (click above to open LifeViewer) Catagolue: here |
Glider synthesis
On January 18, 2024, Chris857 found syntheses for a few oscillators that combine the supports of gourmet and the eater 2 variant of popover.[2][3] On July 4, 2024, he found a 62-glider synthesis of a gourmet variant, which was quickly improved to 55 gliders,[4] and further improved to 45 gliders on October 10, 2024.[5][6] On October 9, 2024, Chris857 found an 85-glider synthesis of popover,[7][8] which he and KtT improved to 81 gliders the same day,[9][5][10] and which Chris857 further improved to 79 gliders the next day.[5][11]
See also
- PT8P
- Pi orbital
- Tanner's p46
- Baker's dozen, which uses the same loaf-spin reaction as popover.
References
- ↑ 1.0 1.1 1.2 Dean Hickerson's oscillator stamp collection.
- ↑ Chris857 (January 18, 2024). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#5963693912) (January 19, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.
- ↑ Chris857 (July 4, 2024). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ 5.0 5.1 5.2 Chris857 (October 9, 2024). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#8048983844) (October 10, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.
- ↑ Chris857 (October 9, 2024). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#8030461383) (October 9, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.
- ↑ KtT (October 9, 2024). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#8036720036) (October 9, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.
- ↑ shinjuku (#8042017651) (October 10, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.
External links
- Gourmet at the Life Lexicon
- Pi portraitor at the Life Lexicon
- Popover at the Life Lexicon
- Gourmet at Adam P. Goucher's Catagolue
- 66P32.1 at Heinrich Koenig's Game of Life Object Catalogs
- Gourmet at Wikipedia (name origin)
- Popover at Wikipedia
- Patterns
- Oscillators with 66 cells
- Periodic objects with minimum population 66
- Patterns with 66 cells
- Patterns found by David Buckingham
- Patterns found in 1978
- Patterns that can be constructed with 45 gliders
- Oscillators
- Shuttles
- Oscillators with period 32
- Oscillators with mod 8
- Oscillators with heat 6
- Oscillators with volatility 0.60
- Oscillators with strict volatility 0.60
- Oscillators with nrk symmetry
- Pi-heptomino hasslers