Cuphook
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| Cuphook | |||||||||||
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| Pattern type | Oscillator | ||||||||||
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| Oscillator type | Muttering moat | ||||||||||
| Number of cells | 18 | ||||||||||
| Bounding box | 9×8 | ||||||||||
| Frequency class | 41.6 | ||||||||||
| Period | 3 | ||||||||||
| Mod | 3 | ||||||||||
| Heat | 2 | ||||||||||
| Volatility | 0.14 | ||||||||||
| Strict volatility | 0.14 | ||||||||||
| Rotor type | Cuphook | ||||||||||
| Discovered by | Rich Schroeppel | ||||||||||
| Year of discovery | 1970 | ||||||||||
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Cuphook is a period-3 oscillator that was found by Rich Schroeppel in October 1970.[1][2] It is one of only three essentially different period 3 oscillators with only three cells in the rotor. The others are 1-2-3 and stillater.
The name cuphook has long been associated with the trans isomer (more accurately, trans-block on cuphook), as shown in the infobox. The cis isomer of this oscillator (cis-block on cuphook) first appeared naturally on March 15, 2015, in a soup submitted to Catagolue by Adam P. Goucher.[3]
Gallery
 cis-block on cuphook |
References
- ↑ Robert Wainwright (March 1971). Lifeline, vol 1.
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- ↑ gameoflifeboy (March 15, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
External links
- Cuphook at the Life Lexicon
- Cuphook at Adam P. Goucher's Catagolue
- Cuphook at Adam P. Goucher's Catagolue
- 18P3.21 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Patterns with Catagolue frequency class 41
- Natural periodic objects
- Oscillators with 18 cells
- Periodic objects with minimum population 18
- Patterns with 18 cells
- Patterns found by Rich Schroeppel
- Patterns found in 1970
- Patterns that can be constructed with 7 gliders
- Oscillators
- Muttering moats
- Oscillators with period 3
- Oscillators with mod 3
- Oscillators with heat 2
- Oscillators with volatility 0.14
- Oscillators with strict volatility 0.14
- Oscillators with rotor Cuphook