34P20
Jump to navigation
Jump to search
| 34P20 | |||||||||
| View static image | |||||||||
| Pattern type | Oscillator | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 34 | ||||||||
| Bounding box | 16 × 16 | ||||||||
| Period | 20 (mod: 10) | ||||||||
| Heat | 36.8 | ||||||||
| Volatility | 1.00 | 0.94 | ||||||||
| Kinetic symmetry | /xk | ||||||||
| Discovered by | Charity Engine | ||||||||
| Year of discovery | 2022 | ||||||||
| |||||||||
| |||||||||
| |||||||||
| |||||||||
34P20 is a period-20 oscillator found by Charity Engine on October 8, 2022.[1] In terms of its 34 cells, it is the smallest known non-LCM-based p20 oscillator. It is also the first non-trivial p20 oscillator to appear in a symmetric soup search, with all previous p20 examples consisting of non-interacting p4 and p5 rotors.
Tanner Jacobi found a 23-glider synthesis of this oscillator on the day of its discovery,[2][3] while Carson Cheng found a 22-glider synthesis shortly after.[4] A reduction to 21 gliders was found in March 2023, by constructing xs16_4a9la4ozx121 in 5 gliders instead of 6.[5]
References
- ↑ cvojan (October 8, 2022). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Tanner Jacobi (October 8, 2022). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ Tanner Jacobi (October 8, 2022). Message in #cgol on the Conwaylife Lounge Discord server
- ↑ Dave Greene (October 8, 2022). Re: NewLifeCA Back Issues (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#3962004812) (March 19, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
External links
Categories:
- Patterns
- Oscillators with 34 cells
- Periodic objects with minimum population 34
- Patterns with 34 cells
- Patterns found by Charity Engine
- Patterns found in 2022
- Patterns that can be constructed with 21 gliders
- Oscillators
- Oscillators with period 20
- Oscillators with mod 10
- Oscillators with heat 36
- Oscillators with volatility 1.00
- Oscillators with strict volatility 0.94
- Oscillators with /xk symmetry
- Unnamed periodic objects
- Sparkers
- Sparkers with period 20
- Domino sparkers
- Weak sparkers
- Dot sparkers
- Strong sparkers