David Hilbert
David Hilbert  
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Pattern type  Oscillator  

Number of cells  122  
Bounding box  33×26  
Period  23  
Mod  23  
Heat  34.6  
Volatility  0.71  
Strict volatility  0.71  
Discovered by  Luka Okanishi Aidan F. Pierce  
Year of discovery  2019  
 
 

David Hilbert^{[1]}^{[note 1]} (or 122P23) was the first period23 oscillator to be discovered. It was found by Luka Okanishi on November 24, 2019^{[2]} based on a partial result by Aidan F. Pierce.^{[1]} It consists of two copies of an engine, itself consisting of a Bheptomino being hassled by two unusual catalysts and a block, supported by a known periodagnostic beehive shuttle mechanism (seen in, for example, an extension of the carnival shuttle). There are several isomers known (including trans versions and different phase offsets), with the one pictured having minimum population and bounding box. A 101glider synthesis for one of these variants was posted by Goldtiger997 on December 29.^{[3]}
David Hilbert was voted on the ConwayLife.com forums as Pattern of the Year 2019.^{[4]}
Notes
 ↑ Named after German mathematician David Hilbert in reference to his 23 problems.
References
 ↑ ^{1.0} ^{1.1} Luka Okanishi (November 25, 2019). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
 ↑ Luka Okanishi (November 24, 2019). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
 ↑ Goldtiger997 (December 29, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
 ↑ Dave Greene (March 16, 2020). Re: POTY 2019 Voting (discussion thread) at the ConwayLife.com forums
External links
 Patterns
 Oscillators with 122 cells
 Patterns with 122 cells
 Patterns found by Luka Okanishi
 Patterns found by Aidan F. Pierce
 Patterns found in 2019
 Oscillators
 Periodic objects with minimum population 122
 Oscillators with period 23
 Oscillators with mod 23
 Oscillators with heat 34
 Oscillators with volatility 0.71
 Oscillators with strict volatility 0.71