Monogram: Difference between revisions
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==External links== | ==External links== | ||
{{LinkLexicon|lex_m.htm#monogram}} | {{LinkLexicon|lex_m.htm#monogram}} | ||
{{LinkCatagolue|xp4_hv4a4vh}} | {{LinkCatagolue|xp4_hv4a4vh}} | ||
Revision as of 01:40, 3 December 2020
| Monogram | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 18 | ||||||||
| Bounding box | 7 × 7 | ||||||||
| Frequency class | 40.9 | ||||||||
| Period | 4 (mod: 2) | ||||||||
| Heat | 14 | ||||||||
| Volatility | 0.88 | 0.88 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | Dean Hickerson | ||||||||
| Year of discovery | 1989 | ||||||||
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Monogram (or initials[1] or JHC[2]) is a period-4 oscillator that was found by Dean Hickerson on August 11, 1989.[3] It produces some weak sparks which can utilized in e.g. the stabilization of the carnival shuttle.
It first appeared semi-naturally in September 2014 in a soup found by Josh Ball using apgsearch.[4] It later appeared in an asymmetric soup on May 5, 2015.[5]
References
- ↑ "Initials". The Life Lexicon. Stephen Silver. Retrieved on June 13, 2009.
- ↑ "JHC". The Life Lexicon. Stephen Silver. Retrieved on April 30, 2009.
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- ↑ Josh Ball (September 28, 2014). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Lewis Patterson (May 5, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
External links
- Monogram at the Life Lexicon
- 18P4.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Patterns with Catagolue frequency class 40
- Natural periodic objects
- Oscillators with 18 cells
- Periodic objects with minimum population 18
- Patterns with 18 cells
- Patterns found by Dean Hickerson
- Patterns found in 1989
- Patterns that can be constructed with 10 gliders
- Oscillators
- Oscillators with period 4
- Oscillators with mod 2
- Oscillators with heat 14
- Oscillators with volatility 0.88
- Oscillators with strict volatility 0.88
- Patterns with rectangular orthogonal symmetry
- Flipping oscillators
- Sparkers
- Sparkers with period 4
- Weak sparkers