David Hilbert

David Hilbert[1][note 1] (or 122P23) was the first period-23 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 B-heptomino being hassled by two unusual catalysts and a block, supported by a known period-agnostic 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 101-glider synthesis for one of these variants was posted by Goldtiger997 on December 29.[3]

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 was voted on the ConwayLife.com forums as Pattern of the Year 2019.[4]

Notes
  1. Named after German mathematician David Hilbert in reference to his 23 problems.
gollark: Mostly I just treat it as "far away/abstract rather bad but not world-destroying thing #12409124".
gollark: ```bashosmarks@fenrir ~> ftp jiasheng.mlftp: connect to address 151.192.233.140: Connection timed outftp: no response from hostftp>```
gollark: I can't connect to it, anyway.
gollark: It seems not.
gollark: That's twice as fast as *my* home connection.

References
  1. Luka Okanishi (November 25, 2019). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
  2. Luka Okanishi (November 24, 2019). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
  3. Goldtiger997 (December 29, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  4. Dave Greene (March 16, 2020). Re: POTY 2019 Voting (discussion thread) at the ConwayLife.com forums
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