Achim's p8
Jump to navigation
Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
| Achim's p8 | |||||||||
| View animated image | |||||||||
| View static image | |||||||||
| Pattern type | Oscillator | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 18 | ||||||||
| Bounding box | 9 × 9 | ||||||||
| Frequency class | 43.5 | ||||||||
| Period | 8 | ||||||||
| Mod | 4 | ||||||||
| Heat | 14 | ||||||||
| Volatility | 0.90 | ||||||||
| Strict volatility | 0.70 | ||||||||
| Discovered by | Achim Flammenkamp | ||||||||
| Year of discovery | 1994 | ||||||||
| |||||||||
| |||||||||
| |||||||||
| |||||||||
Achim's p8 is a period-8 oscillator discovered by Achim Flammenkamp on July 20, 1994.[1]
Synthesis
In August 2004 Jason Summers and Mark Niemiec found a 13-glider synthesis of this oscillator.[2] On July 8, 2017, gmc_nxtman reduced the cost to 9 gliders.[3] Chris857 further reduced the cost to 8 gliders on December 31, 2022,[4] with iNoMed posting an alternate 8G synth the same day.[5]
Commonness
On Catagolue, it is the fifth most common period 8 oscillator, being slightly less common than smiley.[6] It first occurred naturally on August 21, 2015, in a soup submitted to Catagolue by Tanner Jacobi.[7]
See also
References
- ↑ Dean Hickerson's oscillator stamp collection.
- ↑ Jason Summers' jslife pattern collection.
- ↑ gmc_nxtman (July 8, 2017). Re: Thread for your unsure discoveries (discussion thread) at the ConwayLife.com forums
- ↑ Chris857 (December 31, 2022). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ iNoMed (December 31, 2022). Message in #cgol on the Conwaylife Lounge Discord server
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on October 27, 2018.
- ↑ gameoflifeboy (August 21, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
External links
- Achim's p8 at the Life Lexicon
- 18P8.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Patterns with Catagolue frequency class 43
- Natural periodic objects
- Oscillators with 18 cells
- Periodic objects with minimum population 18
- Patterns with 18 cells
- Patterns found by Achim Flammenkamp
- Patterns found in 1994
- Patterns that can be constructed with 8 gliders
- Oscillators
- Oscillators with period 8
- Oscillators with mod 4
- Oscillators with heat 14
- Oscillators with volatility 0.90
- Oscillators with strict volatility 0.70
- Patterns with 180-degree rotation symmetry
- Flipping oscillators