28P7.2: Difference between revisions
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|by = 11 | |by = 11 | ||
|p = 7 | |p = 7 | ||
|m = 7 | |||
|h = 5.1 | |h = 5.1 | ||
|v = 0.42 | |v = 0.42 | ||
Revision as of 18:01, 26 July 2016
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 28 | ||||||||
| Bounding box | 12 × 11 | ||||||||
| Period | 7 (mod: 7) | ||||||||
| Heat | 5.1 | ||||||||
| Volatility | 0.42 | 0.42 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | Dean Hickerson | ||||||||
| Year of discovery | 1998 | ||||||||
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28P7.2 is an unnamed period 7 oscillator discovered by Dean Hickerson in 1998. In terms of its 28 cells, it is tied with oscillators burloaferimeter and 28P7.1 as the smallest known period 7 oscillator.[1] In September, 2000 Mark Niemiec and Jason Summers found a 22-glider synthesis of this oscillator.[2]
References
- ↑ "Class 2 Objects Catalog". Retrieved on March 14, 2009.
- ↑ Jason Summers' jslife pattern collection.
External links
Categories:
- Patterns
- Oscillators with 28 cells
- Periodic objects with minimum population 28
- Patterns with 28 cells
- Patterns found by Dean Hickerson
- Patterns found in 1998
- Patterns that can be constructed with 22 gliders
- Oscillators
- Oscillators with period 7
- Oscillators with mod 7
- Oscillators with heat 5
- Oscillators with volatility 0.42
- Oscillators with strict volatility 0.42
- Patterns with 180-degree rotation symmetry