P58 toadsucker: Difference between revisions
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'''P58 toadsucker''' is a {{period|58}} [[toad#toadsucker|toadsucker]] [[oscillator]] found by [[Bill Gosper]] and [[Mark Niemiec]] on October 25, {{year|1994}},<ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref> being the first period 58 oscillator to be found. It is based on a period {{period|29|brief}} [[polyomino#domino|domino]] [[spark]]er that changes the phase of a [[pentadecathlon]], and works by shifting a [[toad]] back and forth every 58 [[generation]]s. This was the only known way to create period 58 oscillators until the discovery of [[Herschel loop]]s and an [[eater]] that allowed sufficient compression. In terms of its {{cells|258}} [[cell]]s it was the smallest known period 58 oscillator before discovery of the [[Snark]] and p29 bouncer. | '''P58 toadsucker''' is a {{period|58}} [[toad#toadsucker|toadsucker]] [[oscillator]] found by [[Bill Gosper]] and [[Mark Niemiec]] on October 25, {{year|1994}},<ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref> being the first period 58 oscillator to be found. It is based on a period {{period|29|brief}} [[polyomino#domino|domino]] [[spark]]er that changes the phase of a [[pentadecathlon]], and works by shifting a [[toad]] back and forth every 58 [[generation]]s. This was the only known way to create period 58 oscillators until the discovery of [[Herschel loop]]s and an [[eater]] that allowed sufficient compression. In terms of its {{cells|258}} [[cell]]s it was the smallest known period 58 oscillator before discovery of the [[Snark]] and p29 bouncer. p58 toad flippers are also possible, also at 258 cells as shown below: | ||
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Revision as of 22:15, 14 December 2021
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 258 | ||||||||
| Bounding box | 67 × 56 | ||||||||
| Period | 58 (mod: 58) | ||||||||
| Heat | 220.1 | ||||||||
| Volatility | 0.91 | 0.01 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | Bill Gosper Mark Niemiec | ||||||||
| Year of discovery | 1994 | ||||||||
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P58 toadsucker is a period-58 toadsucker oscillator found by Bill Gosper and Mark Niemiec on October 25, 1994,[1] being the first period 58 oscillator to be found. It is based on a period 29 domino sparker that changes the phase of a pentadecathlon, and works by shifting a toad back and forth every 58 generations. This was the only known way to create period 58 oscillators until the discovery of Herschel loops and an eater that allowed sufficient compression. In terms of its 258 cells it was the smallest known period 58 oscillator before discovery of the Snark and p29 bouncer. p58 toad flippers are also possible, also at 258 cells as shown below:
| (click above to open LifeViewer) RLE: here Plaintext: here |
See also
References
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
External links
- p58 toadsucker at Adam P. Goucher's Catagolue (extended)
Categories:
- Patterns
- Oscillators with between 200 and 299 cells
- Periodic objects with minimum population between 200 and 299
- Patterns with between 200 and 299 cells
- Patterns found by Bill Gosper
- Patterns found by Mark Niemiec
- Patterns found in 1994
- Outer-totalistically endemic patterns
- Oscillators
- Oscillators with period 58
- Oscillators with mod 58
- Oscillators with heat between 200 and 299
- Oscillators with volatility 0.91
- Oscillators with strict volatility 0.01