Tumbler: Difference between revisions
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==Synthesis== | ==Synthesis== | ||
In August 2014, Bob Shemyakin found a 6-glider synthesis<ref>{{cite web|url=http://conwaylife.com/forums/viewtopic.php?p=12917#p12917|title=Re: Synthesising Oscillators|date=August 16, 2014|accessdate=May 15, 2019|author=Bob Shemyakin}}</ref> for a tumbler. In January 2020 [[Tanner Jacobi]] found a cheaper recipe with a [[Catagolue]]-based randomized 5-glider search.<ref>{{cite web|url=https://www.conwaylife.com/forums/viewtopic.php?p=87363#p87363|title=Re: Randomly enumerating glider syntheses|date=January 12, 2020|accessdate=January 12, 2020|author=Hdjensofjfnen}}</ref> | In August 2014, Bob Shemyakin found a 6-glider synthesis<ref>{{cite web|url=http://conwaylife.com/forums/viewtopic.php?p=12917#p12917|title=Re: Synthesising Oscillators|date=August 16, 2014|accessdate=May 15, 2019|author=Bob Shemyakin}}</ref> for a tumbler. In January 2020 [[Tanner Jacobi]] found a cheaper recipe with a [[Catagolue]]-based randomized 5-glider search.<ref>{{cite web|url=https://www.conwaylife.com/forums/viewtopic.php?p=87363#p87363|title=Re: Randomly enumerating glider syntheses|date=January 12, 2020|accessdate=January 12, 2020|author=Hdjensofjfnen}}</ref> | ||
==As a sparker== | |||
The tumbler has a few, but very few, applications where it can act as a weak sparker. In most cases, the tumbler is not the only thing that works, but it can be useful to reduce the population. | |||
{| | |||
|{{EmbedViewer | |||
|pname = p28bheptominohassler | |||
|position = left | |||
|viewerconfig = #C [[ GPS 14 THUMBSIZE 2 ]] | |||
|caption = Period 28 | |||
}} | |||
|{{EmbedViewer | |||
|pname = p70glidershuttle | |||
|position = left | |||
|viewerconfig = #C [[ GPS 35 THUMBSIZE 2 ]] | |||
|caption = Period 70 | |||
}} | |||
|} | |||
==See also== | ==See also== | ||
Revision as of 12:47, 31 October 2021
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 16 | ||||||||
| Bounding box | 9 × 7 | ||||||||
| Frequency class | 29.9 | ||||||||
| Period | 14 (mod: 7) | ||||||||
| Heat | 10.3 | ||||||||
| Volatility | 1.00 | 0.88 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | George Collins | ||||||||
| Year of discovery | 1970 | ||||||||
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The tumbler is the smallest known and first discovered period-14 oscillator and was found by George Collins in 1970.[1][2] It was the only known period 14 oscillator until the discovery of 44P14 on April 21, 1997.
Tumbler is about the twenty-eighth most common naturally-occurring oscillator in Achim Flammenkamp's census, being less common than octagon 2 and unix but more common than tub test tube baby.[3] On Catagolue, it is the only known period 14 oscillator to have occurred naturally.[4]
Synthesis
In August 2014, Bob Shemyakin found a 6-glider synthesis[5] for a tumbler. In January 2020 Tanner Jacobi found a cheaper recipe with a Catagolue-based randomized 5-glider search.[6]
As a sparker
The tumbler has a few, but very few, applications where it can act as a weak sparker. In most cases, the tumbler is not the only thing that works, but it can be useful to reduce the population.
See also
References
- ↑ "Class 2 Objects Catalog". Retrieved on April 11, 2009.
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- ↑ 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.
- ↑ Bob Shemyakin (August 16, 2014). "Re: Synthesising Oscillators". Retrieved on May 15, 2019.
- ↑ Hdjensofjfnen (January 12, 2020). "Re: Randomly enumerating glider syntheses". Retrieved on January 12, 2020.
External links
- Tumbler at the Life Lexicon
- 16P14.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- 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 George Collins
- Patterns found in 1970
- Patterns that can be constructed with 5 gliders
- Oscillators
- Oscillators with period 14
- Oscillators with mod 7
- Oscillators with heat 10
- Oscillators with volatility 1.00
- Oscillators with strict volatility 0.88
- Patterns with bilateral orthogonal symmetry
- Flipping oscillators