Unix
| Unix | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 16 | ||||||||
| Bounding box | 9 × 9 | ||||||||
| Frequency class | 29.3 | ||||||||
| Period | 6 (mod: 6) | ||||||||
| Heat | 11.3 | ||||||||
| Volatility | 0.80 | 0.80 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | David Buckingham | ||||||||
| Year of discovery | 1976 | ||||||||
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Unix (plural: unices) is a period-6 oscillator that was found by David Buckingham on February 10, 1976. It consists of two blocks eating a long barge and is a useful sparker.[1] Its name derives from the fact that it was for some time the mascot of the Unix lab of the mathematics faculty at the University of Waterloo in Ontario, Canada. With just 16 cells, it is the smallest known period 6 oscillator.[2]
Unix is about the twenty-sixth most common naturally-occurring oscillator in Achim Flammenkamp's census, being about as common as octagon 2.[3] On Catagolue, it is the most common period 6 oscillator and until 2020, it was the only non-trivial one to have appeared naturally, as all others consisted of period 2 and 3 rotors that do not interact.[4] However, on May 8, 2020, an oscillator appeared naturally consisting of a unix whose spark is suppressed on one side by a clock.[5]
A 5-glider synthesis of this oscillator was found by Goldtiger997 on May 14, 2019, based on a 4-glider collision submitted to Catagolue by Arie Paap in a custom apgsearch symmetry.[6]
Gallery
| SKOP 102: p102 unix loop (click above to open LifeViewer) RLE: here Plaintext: here |
See also
References
- ↑ Dean Hickerson's oscillator stamp collection.
- ↑ "Class 2 Objects Catalog". Retrieved on March 14, 2009.
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on October 27, 2018.
- ↑ praosylen (May 8, 2020). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Jeremy Tan (May 14, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
External links
- Unix at the Life Lexicon
- Unix at Adam P. Goucher's Catagolue
- 16P6.1 at Heinrich Koenig's Game of Life Object Catalogs
- Patterns
- Patterns with Catagolue frequency class 29
- Natural periodic objects
- Oscillators with 16 cells
- Periodic objects with minimum population 16
- Patterns with 16 cells
- Patterns found by David Buckingham
- Patterns found in 1976
- Patterns that can be constructed with 5 gliders
- Oscillators
- Oscillators with period 6
- Oscillators with mod 6
- Oscillators with heat 11
- Oscillators with volatility 0.80
- Oscillators with strict volatility 0.80
- Sparkers
- Sparkers with period 6
- Dot sparkers
- Strong sparkers
- Patterns with bilateral diagonal symmetry