p10 traffic light hassler
| p10 traffic light hassler | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 56 | ||||||||
| Bounding box | 17 × 20 | ||||||||
| Period | 10 (mod: 10) | ||||||||
| Heat | 44 | ||||||||
| Volatility | 0.91 | 0.91 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | David Buckingham | ||||||||
| Year of discovery | 1983 | ||||||||
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P10 traffic light hassler is a period-10 oscillator found by David Buckingham on May 1, 1983,[1] consisting of eight blocks hassling four traffic light predecessors. The version in the infobox is the introvert, with all the blocks on the sides of the traffic light towards the center. The extrovert is also possible, with the blocks closer to the edge:
| "Extrovert" version (click above to open LifeViewer) RLE: here Plaintext: here |
Combinations of introverts and extroverts are also possible, and blocks can also be shared with other introverts or extroverts, or with another p10 oscillator.
The first known semi-natural appearance of this oscillator was in November 2014 in a soup found by Adam P. Goucher using apgsearch.[2]
On January 7, 2020, Jeremy Tan reduced the syntheses for both introvert and extrovert to 22 gliders.[3] Matti Ward and Ian07 further reduced the introvert synthesis to 18 gliders on January 9,[4] and Jeremy Tan reduced the extrovert to 20 gliders the next day.[5] On February 17, 2022, iNoMed found 16-glider syntheses for both versions.[6]
References
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on October 20, 2019.
- ↑ Adam P. Goucher (November 25, 2014). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Jeremy Tan (January 7, 2020). Re: Soup-based syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Ian07 (January 9, 2020). Re: Soup-based syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Jeremy Tan (January 10, 2020). Re: Soup-based syntheses (discussion thread) at the ConwayLife.com forums
- ↑ iNoMed (February 17, 2022). Message in #cgol on the Conwaylife Lounge Discord server
External links
- Introvert at Adam P. Goucher's Catagolue
- Extrovert at Adam P. Goucher's Catagolue
- 56P10.2 at Heinrich Koenig's Game of Life Object Catalogs
- Patterns
- Oscillators with 56 cells
- Periodic objects with minimum population 56
- Patterns with 56 cells
- Patterns found by David Buckingham
- Patterns found in 1983
- Patterns that can be constructed with 16 gliders
- Oscillators
- Oscillators with period 10
- Oscillators with mod 10
- Oscillators with heat 44
- Oscillators with volatility 0.91
- Oscillators with strict volatility 0.91
- Patterns with rectangular orthogonal symmetry
- Sparkers
- Sparkers with period 10
- Domino sparkers
- Strong sparkers
- Semi-natural periodic objects