Jason's p22: Difference between revisions
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{{About|the 36-cell period-22 oscillator|the 22-cell period-36 oscillator|22P36}} | {{About|the 36-cell period-22 oscillator|the 22-cell period-36 oscillator|22P36}} | ||
'''Jason's p22''' (or '''36P22''') is a {{period|22}} [[oscillator]] discovered by [[Jason Summers]] on August 27, {{year|2000}}.<ref>{{CiteSummersPattern|name=all-osc}}</ref> It is composed of an unnamed reaction stabilized by two copies of [[eater 1]]. In terms of its {{cells|36}} [[cell]]s, it is the smallest known [[non-trivial]] period-22 oscillator, followed by | '''Jason's p22''' (or '''36P22''') is a {{period|22}} [[oscillator]] discovered by [[Jason Summers]] on August 27, {{year|2000}}.<ref>{{CiteSummersPattern|name=all-osc}}</ref> It is composed of an unnamed reaction stabilized by two copies of [[eater 1]]. In terms of its {{cells|36}} [[cell]]s, it is the smallest known [[non-trivial]] period-22 oscillator, followed by [[Honey farm hasslers|p22 honey farm hassler]] and [[champagne glass]] with {{cells|40}} and {{cells|45}} cells, respectively.<ref>{{cite web|url=http://pentadecathlon.com/objects/class2/class2.php?part=2 |title=Class 2 Objects Catalog |accessdate=April 9, 2009}}</ref> | ||
It gives off [[spark]]s, which in addition to allowing for the construction of non-trivial higher-period oscillators as seen in a [[Jason's_p22#LCM_oscillators|later section]], can be used to [[hassle]] various patterns shown in [[Jason's_p22#Gallery|gallery]] below. Later on the day of the oscillator's discovery, [[David Eppstein]] found a way to combine two of them to produce the first [[true period|true]] [[period-22 glider gun]]. | It gives off [[spark]]s, which in addition to allowing for the construction of non-trivial higher-period oscillators as seen in a [[Jason's_p22#LCM_oscillators|later section]], can be used to [[hassle]] various patterns shown in [[Jason's_p22#Gallery|gallery]] below. Later on the day of the oscillator's discovery, [[David Eppstein]] found a way to combine two of them to produce the first [[true period|true]] [[period-22 glider gun]]. | ||
Revision as of 02:27, 8 August 2022
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 36 | ||||||||
| Bounding box | 27 × 14 | ||||||||
| Period | 22 (mod: 22) | ||||||||
| Heat | 35.6 | ||||||||
| Volatility | 0.93 | 0.93 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | Jason Summers | ||||||||
| Year of discovery | 2000 | ||||||||
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- This article is about the 36-cell period-22 oscillator. For the 22-cell period-36 oscillator, see 22P36.
Jason's p22 (or 36P22) is a period-22 oscillator discovered by Jason Summers on August 27, 2000.[1] It is composed of an unnamed reaction stabilized by two copies of eater 1. In terms of its 36 cells, it is the smallest known non-trivial period-22 oscillator, followed by p22 honey farm hassler and champagne glass with 40 and 45 cells, respectively.[2]
It gives off sparks, which in addition to allowing for the construction of non-trivial higher-period oscillators as seen in a later section, can be used to hassle various patterns shown in gallery below. Later on the day of the oscillator's discovery, David Eppstein found a way to combine two of them to produce the first true period-22 glider gun.
Glider synthesis
In February 2001, Jason Summers found a 12-glider synthesis of this oscillator,[3] which was improved to 11 gliders by 2718281828 in December 2017[4] and later 10 by Mark Niemiec in September 2019.[5]
Gallery
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The oscillators below are listed due to being the smallest known ones by population, while also satisfying the condition that at least one cell oscillates at the full period.
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See also
- 30P25, another rotationally symmetric oscillator consisting of an active region supported by two fishhooks
References
- ↑ Jason Summers' all-osc pattern collection.
- ↑ "Class 2 Objects Catalog". Retrieved on April 9, 2009.
- ↑ Jason Summers' jslife pattern collection.
- ↑ 2718281828 (December 6, 2017). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ Mark Niemiec (September 30, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ praosylen (September 20, 2015). Re: Thread For Your Accidental Discoveries (discussion thread) at the ConwayLife.com forums
- ↑ David Raucci (November 2, 2021). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ David Raucci (February 17, 2022). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Matthias Merzenich (June 16, 2021). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
External links
- 36P22.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Oscillators with 36 cells
- Periodic objects with minimum population 36
- Patterns with 36 cells
- Patterns found by Jason Summers
- Patterns found in 2000
- Patterns that can be constructed with 10 gliders
- Oscillators
- Oscillators with period 22
- Oscillators with mod 22
- Oscillators with heat 35
- Oscillators with volatility 0.93
- Oscillators with strict volatility 0.93
- Patterns with 180-degree rotation symmetry
- Sparkers
- Sparkers with period 22
- Non-reflecting duoplet sparkers
- Strong sparkers