Tripole

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Tripole
4b2o$3bobo2$bobo$o$2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]]
Pattern type Oscillator
Family Barberpole
Number of cells 9
Bounding box 6×6
Frequency class 26.6
Period 2
Mod 1
Heat 6
Volatility 0.50
Strict volatility 0.50
Rotor type Pole 3
Discovered by MIT group
Year of discovery 1970

The tripole is the barberpole of length 3.

Commonness

The tripole is about the fourteenth most common naturally-occurring oscillator in Achim Flammenkamp's census, being less common than quadpole tie ship but more common than mazing.[1] It is the fourteenth most common oscillator on Adam P. Goucher's Catagolue. However, in diagonal symmetries, including 8-fold symmetries, the tripole is more more common than both the bipole and quadpole.

Glider synthesis

Tanner Jacobi improved the previous 7-glider synthesis to 6 gliders on November 12, 2014.[2] Martin Grant found an alternative 6-glider edge-shooting recipe on June 23, 2017.[3] goldenratio found a 5-glider synthesis in September 2020.[4]

See also

References

  1. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
  2. Tanner Jacobi (November 12, 2014). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  3. Martin Grant (June 23, 2017). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  4. Ian07 (September 21, 2020). Re: Randomly enumerating glider syntheses (discussion thread) at the ConwayLife.com forums

External links

  • 9P2.1 at Heinrich Koenig's Game of Life Object Catalogs