Cha cha: Difference between revisions
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m correcting from 12 to 13 — the list of 12 doesn't include cha cha itself, so it can't be "one of twelve" if it's not even on the list |
Name origin and synthesis references |
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== Glider synthesis == | == Glider synthesis == | ||
{{ | A 23-glider [[glider_synthesis|synthesis]] was found by [[Martin Grant]] in early December 2013.<ref name="post9966" /> Later a {{gliders|12|text=12-glider}} synthesis was found by [[Goldtiger997]] in April 2019.<ref name="post75247" /> | ||
== References == | == References == | ||
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|author = Carson Cheng | |author = Carson Cheng | ||
|date = July 17, 2022 | |date = July 17, 2022 | ||
}}</ref> | |||
<ref name="post9966">{{LinkForumThread | |||
|format = ref | |||
|title = Re: Synthesising Oscillators | |||
|p = 9966 | |||
|author = Martin Grant | |||
|date = December 1, 2013 | |||
}}</ref> | |||
<ref name="post75247">{{LinkForumThread | |||
|format = ref | |||
|title = Re: Synthesising Oscillators | |||
|p = 75247 | |||
|author = Jeremy Tan | |||
|date = April 19, 2019 | |||
}}</ref> | }}</ref> | ||
</references> | </references> | ||
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* {{LinkCatagolue|xp2_4o6o7o68zx1}} | * {{LinkCatagolue|xp2_4o6o7o68zx1}} | ||
* {{LinkPentadecathlonObject|16P2.94}} | * {{LinkPentadecathlonObject|16P2.94}} | ||
* {{LinkWikipedia|Cha_cha_cha_(dance)|name=Cha cha}} (name origin) | |||
{{Symmetry|180degree}} | {{Symmetry|180degree}} | ||
__NOTOC__ | __NOTOC__ | ||
Revision as of 03:29, 17 July 2023
| Cha cha | |||||||||
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| Pattern type | Oscillator | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Oscillator type | Muttering moat | ||||||||
| Family | Clock | ||||||||
| Number of cells | 16 | ||||||||
| Bounding box | 8 × 6 | ||||||||
| Period | 2 (mod: 2) | ||||||||
| Heat | 16 | ||||||||
| Volatility | 0.66 | 0.66 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
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Cha cha[1] is a period 2 muttering moat[2] oscillator, the long extension of clock.
Commonness
- Main article: List of common oscillators
As of July 2023, this is one of thirteen 16-cell oscillators which are yet to arise naturally from an asymmetric soup on Catagolue.[3]
In a somewhat unique case, on July 11, 2022 Charity Engine found a symmetric soup (in the symmetry C2_2) that produces this oscillator in an asymmetric manner, and the two halves of the soup do not interact throughout the evolution of the soup. As a result, by using the same seed for a C1 soup, an asymmetric soup producing cha cha can be made, making it ambiguous whether or not this oscillator qualifies as "natural".[4]
Glider synthesis
A 23-glider synthesis was found by Martin Grant in early December 2013.[5] Later a 12-glider synthesis was found by Goldtiger997 in April 2019.[6]
References
- ↑ Cha cha at Mark D. Niemiec's Life Page
- ↑ fsrm (February 23, 2016). Re: Thread for your unsure discoveries (discussion thread) at the ConwayLife.com forums
- ↑ Small Unnatural Objects Watchlist (discussion thread) at the ConwayLife.com forums
- ↑ Carson Cheng (July 17, 2022). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Martin Grant (December 1, 2013). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ Jeremy Tan (April 19, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
External links
- The 98 sixteen-bit period 2 oscillators at Mark D. Niemiec's Life Page
- Cha cha at Adam P. Goucher's Catagolue
- 16P2.94 at Heinrich Koenig's Game of Life Object Catalogs
- Cha cha at Wikipedia (name origin)
Categories:
- Patterns
- Oscillators with 16 cells
- Periodic objects with minimum population 16
- Patterns with 16 cells
- Patterns that can be constructed with 12 gliders
- Oscillators
- Clock variants
- Muttering moats
- Oscillators with period 2
- Oscillators with mod 2
- Oscillators with heat 16
- Oscillators with volatility 0.66
- Oscillators with strict volatility 0.66
- Patterns with 180-degree rotation symmetry