Pentoad: Difference between revisions
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*[[Smallest_period_five_oscillators|Smallest period five oscillators]] | |||
==References== | ==References== | ||
Revision as of 14:47, 19 June 2011
| Pentoad | |||||||
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| Pattern type | Oscillator | ||||||
|---|---|---|---|---|---|---|---|
| Number of cells | 20 | ||||||
| Bounding box | 13 × 12 | ||||||
| Period | 5 (mod: Unknown) | ||||||
| Heat | 8.8 | ||||||
| Volatility | Unknown | Unknown | ||||||
| Kinetic symmetry | Unspecified | ||||||
| Discovered by | Bill Gosper | ||||||
| Year of discovery | 1977 | ||||||
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Pentoad (or eater-bound Z-hexomino[1]) is a period 5 oscillator that was found by Bill Gosper in June 1977. It consists of a Z-hexomino that is stabilized by two eater 1s.
It was discovered by Scott Kim that this oscillator is extensible by moving one of the eaters diagonally away by four cells and inserting another Z-hexomino in the gap. A pentoad constructed in this way with n Z-hexominoes has 14 + 6n cells and heat 8.8 + 6.4n. The pentoad with two Z-hexominoes is shown below.
Image gallery
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See also
References
- ↑ Mark D. Niemiec. "Eater-bound Z-hexomino glider synthesis RLE file". Retrieved on April 28, 2009.
External links
- Pentoad at the Life Lexicon