Silver's p5

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Silver's p5
Silver's p5 image
Pattern type Oscillator
Number of cells 17
Bounding box 11×7
Period 5
Mod 5
Heat 8.8
Volatility 0.63
Strict volatility 0.63
Discovered by Stephen Silver
Year of discovery 2000

Silver's p5 is a period 5 oscillator that was found by Stephen Silver in February 2000. In terms of its 17 cells it is the third smallest known period 5 oscillator, after pseudo-barberpole and octagon 2. As it has no spark, it appears upon first glance to be useless. Nonetheless, in March 2000, David Eppstein found a way to use it to reduce the size of Noam Elkies' period 5 reflector. In May 2007 Mark Niemiec found a 14-glider synthesis of a variation of this oscillator that uses an aircraft carrier rather than a snake for stabilization.

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