p146 pi-heptomino hassler
| p146 pi-heptomino hassler | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 51 | ||||||||
| Bounding box | 29 × 24 | ||||||||
| Period | 146 (mod: 146) | ||||||||
| Heat | 47.5 | ||||||||
| Volatility | 0.94 | 0.87 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | Mitchell Riley Luke Kiernan Evin cvojan | ||||||||
| Year of discovery | 2022 | ||||||||
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p146 pi-heptomino hassler (or 51P146) is a period-146 oscillator found by Mitchell Riley and Luke Kiernan on July 6, 2022 using a symmetric variant of CatForce.[1][2] It was later monomerized by Evin[3] and reduced further by cvojan[4] into a 52-cell form, with the only difference from the current form being a fishhook instead of the single toad. On February 23, 2023, iNoMed replaced that fishhook with a toad, reducing it from 52 cells to 51. It is currently the smallest known oscillator of this period.
Later, iNoMed noted that a variant of this oscillator with minimum population of 66 cells is isotropically endemic to Game of Life,[5] surpassing the previous record holder of p196 pi-heptomino hassler plus pentadecathlon at 78 cells:
| Endemic variant of this oscillator (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here |
The current 20-glider synthesis is for the 52-cell form, not the 51-cell form.
References
- ↑ Mitchell Riley (July 6, 2022). Message in #cgol on the Conwaylife Lounge Discord server
- ↑ Mitchell Riley (July 6, 2022). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ EvinZL (July 6, 2022). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ cvojan (July 6, 2022). Message in #cgol on the Conwaylife Lounge Discord server
- ↑ iNoMed (July 29, 2022). Re: Endemic periodic patterns and still lifes (discussion thread) at the ConwayLife.com forums
External links
- Patterns
- Oscillators with 51 cells
- Periodic objects with minimum population 51
- Patterns with 51 cells
- Patterns found by Mitchell Riley
- Patterns found by Luke Kiernan
- Patterns found by Evin
- Patterns found by cvojan
- Patterns found in 2022
- Patterns that can be constructed with 20 gliders
- Outer-totalistically endemic patterns
- Oscillators
- Oscillators with period 146
- Oscillators with mod 146
- Oscillators with heat 47
- Oscillators with volatility 0.94
- Oscillators with strict volatility 0.87
- Sparkers
- Sparkers with period 146
- Dot sparkers
- Moderate sparkers
- Non-reflecting duoplet sparkers
- Pi-heptomino hasslers
- Unnamed periodic objects