Cross

Cross
2b4o2b$2bo2bo2b$3o2b3o$o6bo$o6bo$3o2b3o$2bo2bo2b$2b4o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 GPS 2 ]]
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Pattern type	Oscillator
Number of cells	28
Bounding box	10 × 10
Period	3 (mod: 3)
Heat	26.7
Volatility	0.83 | 0.83
Kinetic symmetry	Unspecified
Discovered by	Robert Wainwright
Year of discovery	1989
Rules Outer-totalistic rules B3/S23 – B3678/S235678 # of rules 27 = 128 Isotropic rules B3acir/S2ae3jr – B2-a34-an5-a678/S1c234-arwz5678
Glider synthesis Fewest gliders 16† Catagolue-generated RLE synthesis Uploaded synthesis RLE cross_synth.rle †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext cross.cells RLE cross.rle
Identifiers apgcode xp3_s471174sz11744711

Cross is a period 3 oscillator that was found in October 1989 by Robert Wainwright. It is the smallest in an infinite family of period 3 oscillators, the next of which is cross 2. The fact that this infinite family of oscillators exists shows that there are an infinite number of oscillators that are polyominoes in at least one of their phases. In August 2004 Jason Summers found a 16-glider synthesis of this oscillator.

See also

• Star

External links

• Cross at the Life Lexicon

• Cross at Adam P. Goucher's Catagolue