Achim's p4
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| Achim's p4 | |||||||
| View animated image | |||||||
| View static image | |||||||
| Pattern type | Oscillator | ||||||
|---|---|---|---|---|---|---|---|
| Number of cells | 40 | ||||||
| Bounding box | 11 × 9 | ||||||
| Period | 4 | ||||||
| Mod | Unknown | ||||||
| Heat | 4 | ||||||
| Volatility | 0.17 | ||||||
| Strict volatility | Unknown | ||||||
| Discovered by | Achim Flammenkamp | ||||||
| Year of discovery | 1994 | ||||||
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Achim's p4 (or cloverleaf) was found in a less compact form (using two sombreros) by David Buckingham in 1976. The form shown here was found by Achim Flammenkamp in 1988. The rotor is two copies of the rotor of 1-2-3-4, so the oscillator is sometimes called the dual 1-2-3-4. It is about the twenty-third most common naturally-occurring oscillator.[1] In October, 2010 Lewis Patterson found a predecessor of this oscillator that allows a 7-glider synthesis.
Image gallery
 The original, less compact form of Achim's p4 |
See also
References
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
External links
- Achim's p4 at the Life Lexicon
Categories:
- Pages using duplicate arguments in template calls
- Patterns
- Oscillators with 40 cells
- Periodic objects with minimum population 40
- Patterns with 40 cells
- Patterns found by Achim Flammenkamp
- Patterns found in 1994
- Patterns that can be constructed with 7 gliders
- Oscillators
- Oscillators with period 4
- Oscillators with heat 4
- Oscillators with volatility 0.17
- Patterns with D2 symmetry