Jolson
Jolson (also known as Al Jolson[note 1]) is a period-15 oscillator consisting of two blocks hassled by two pentadecathlons. It was found by Robert Wainwright in November 1984[1] and named by Bill Gosper.
Jolson | |||||||||||
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Pattern type | Oscillator | ||||||||||
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Number of cells | 42 | ||||||||||
Bounding box | 18×22 | ||||||||||
Period | 15 | ||||||||||
Mod | 15 | ||||||||||
Heat | 47.9 | ||||||||||
Volatility | 0.98 | ||||||||||
Strict volatility | 0.98 | ||||||||||
Discovered by | Robert Wainwright | ||||||||||
Year of discovery | 1984 | ||||||||||
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The hassling mechanism requires two domino sparks, constantly 3 generations apart, provided by sparkers of period 9 or above (e.g. Merzenich's p31). A period 9 version that uses two snackers is possible (see below), but p14 (with tetradecathlons) is impossible.[2]
Image gallery
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![]() One of the phases of Jolson, which led to its name |
Notes
- The name is a reference to Al Jolson, a famous American singer.
gollark: Really?
gollark: ↑ certain LyricTech™ entities
gollark: https://media.discordapp.net/attachments/772689152234749962/863806804164345856/ufo3.png?width=422&height=422
gollark: No, they're just really bad, like all LyricTech™'s other hardware. Have you seen their apinators? Mere *hectobees* per second.
gollark: It's not what LyricTech™ would like to think. They'd *like* to think they're cool and amazing, but are actually bad.
References
- Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- Mark Niemiec (August 14, 2019). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
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