Pentoad: Difference between revisions
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{{Oscillator|p=5|name=Pentoad|pname=pentoad|c=20|h=8.8|bx=13|by=12|life105=true|life106=true|plaintext=true|rle=true|discoverer=Bill Gosper|discoveryear=1977|animated=true}} | __NOTOC__{{Oscillator|p=5|name=Pentoad|pname=pentoad|c=20|h=8.8|bx=13|by=12|life105=true|life106=true|plaintext=true|rle=true|discoverer=Bill Gosper|discoveryear=1977|animated=true|synthesis=12|synthesisRLE=true}} | ||
'''Pentoad''' is a [[period]] [[:Category:Oscillators with period 5|5]] [[oscillator]] that was found by [[:Category:Patterns found by Bill Gosper|Bill Gosper]] in June [[:Category:Patterns found in 1977|1977]]. It consists of a [[Z-hexomino]] that is stabilized by two [[eater 1]]s. | '''Pentoad''' (or '''eater-bound Z-hexomino'''<ref>{{cite web|url=http://home.interserv.com/~mniemiec/20et2z.rle|title=Eater-bound Z-hexomino glider synthesis RLE file|author=Mark D. Niemiec|accessdate=April 28, 2009}}</ref>) is a [[period]] [[:Category:Oscillators with period 5|5]] [[oscillator]] that was found by [[:Category:Patterns found by Bill Gosper|Bill Gosper]] in June [[:Category:Patterns found in 1977|1977]]. It consists of a [[Z-hexomino]] that is stabilized by two [[eater 1]]s. | ||
It was discovered by Scott Kim that this oscillator is extensible by moving one of the eaters diagonally away by four [[cell]]s 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. | It was discovered by Scott Kim that this oscillator is extensible by moving one of the eaters diagonally away by four [[cell]]s 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. | ||
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==See also== | ==See also== | ||
*[[French kiss]] | |||
*[[Toad]] | *[[Toad]] | ||
==References== | |||
<references /> | |||
==External links== | ==External links== | ||
{{LinkWeisstein|filename=Pentoad.html}} | |||
{{LinkLexicon|filename=lex_p.htm#pentoad}} | |||
Revision as of 16:16, 28 April 2009
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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