Tripole
| Tripole | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Family | Barberpole | ||||||||
| Number of cells | 9 | ||||||||
| Bounding box | 6 × 6 | ||||||||
| Frequency class | 26.6 | ||||||||
| Period | 2 (mod: 1) | ||||||||
| Heat | 6 | ||||||||
| Volatility | 0.50 | 0.50 | ||||||||
| Kinetic symmetry | /xk | ||||||||
| Rotor type | Pole 3 | ||||||||
| Discovered by | MIT group | ||||||||
| Year of discovery | 1970 | ||||||||
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The tripole is the barberpole of length 3. It is the sixth smallest of all oscillators, and the only oscillator with a minimum population of 9 cells.
Commonness
The tripole is about the fourteenth most common naturally-occurring oscillator in Achim Flammenkamp's census, being less common than quadpole tie ship but more common than mazing.[1] It is the fourteenth most common oscillator on Adam P. Goucher's Catagolue. However, in diagonal symmetries, including 8-fold symmetries, the tripole is more more common than both the bipole and quadpole.
Glider synthesis
Tanner Jacobi improved the previous 7-glider synthesis to 6 gliders on November 12, 2014.[2] Martin Grant found an alternative 6-glider edge-shooting recipe on June 23, 2017.[3] goldenratio found a 5-glider synthesis in September 2020.[4]
See also
References
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- ↑ Tanner Jacobi (November 12, 2014). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Martin Grant (June 23, 2017). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ Ian07 (September 21, 2020). Re: Randomly enumerating glider syntheses (discussion thread) at the ConwayLife.com forums
External links
- Tripole at the Life Lexicon
- 9P2.1 at Heinrich Koenig's Game of Life Object Catalogs
- Patterns
- Patterns with Catagolue frequency class 26
- Natural periodic objects
- Oscillators with 9 cells
- Periodic objects with minimum population 9
- Patterns with 9 cells
- Patterns found by MIT group
- Patterns found in 1970
- Patterns that can be constructed with 5 gliders
- Oscillators
- Barberpole variants
- Oscillators with period 2
- Oscillators with mod 1
- Oscillators with heat 6
- Oscillators with volatility 0.50
- Oscillators with strict volatility 0.50
- Oscillators with /xk symmetry
- Oscillators with rotor Pole 3
- Extendable oscillators