Difference between revisions of "Unix"
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|isorulemin = B3-ckqy/S23acnq | |isorulemin = B3-ckqy/S23acnq | ||
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'''Unix''' (plural: '''unices''') is a | '''Unix''' (plural: '''unices''') is a {{period|6}} [[oscillator]] that was found by [[David Buckingham]] on February 10, {{year|1976}}. It consists of two [[block]]s eating a [[long barge]] and is a useful [[sparker]].<ref>{{CiteHickersonOscillators}}</ref> Its name derives from the fact that it was for some time the mascot of the Unix lab of the mathematics faculty at the University of Waterloo in Ontario, Canada. With just {{cells|16}} [[cell]]s, it is the smallest known period 6 oscillator.<ref>{{cite web|url=http://pentadecathlon.com/objects/class2/class2.php?part=1 |title=Class 2 Objects Catalog |accessdate=March 14, 2009}}</ref> | ||
A {{gliders|5}} [[synthesis]] of this oscillator was found by [[Goldtiger997]] on May 14, {{year|2019}}, based on a 4-glider collision submitted to [[Catagolue]] by [[Arie Paap]] in a custom [[apgsearch]] symmetry.<ref name="post76180" /> | |||
==[[List of common oscillators|Commonness]]== | ==[[List of common oscillators|Commonness]]== | ||
Unix is about the twenty-sixth most [[common]] naturally-occurring oscillator in [[Achim Flammenkamp's census]], being about as common as [[octagon 2]].<ref>{{citeAchim|accessdate=January 15, 2009}}</ref> On [[Catagolue]], it is the most common period 6 oscillator and the only non-trivial one to have appeared naturally, as all others consist of period | Unix is about the twenty-sixth most [[common]] naturally-occurring oscillator in [[Achim Flammenkamp's census]], being about as common as [[octagon 2]].<ref>{{citeAchim|accessdate=January 15, 2009}}</ref> On [[Catagolue]], it is the most common period 6 oscillator and the only non-trivial one to have appeared naturally, as all others consist of period {{period|2|brief}} and {{period|3|brief}} [[rotor]]s that do not interact.<ref>{{citeCatagolueStats|October 27, 2018}}</ref> | ||
==See also== | ==See also== | ||
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==References== | ==References== | ||
<references /> | <references> | ||
<ref name="post76180">{{LinkForumThread | |||
|format = ref | |||
|title = Re: Synthesising Oscillators | |||
|p = 76180 | |||
|author = Jeremy Tan | |||
|date = May 14, 2019 | |||
}}</ref> | |||
</references> | |||
==External links== | ==External links== | ||
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__NOTOC__ | __NOTOC__ | ||
{{Sparker|p=6|type=dot|strength=strong}} | |||
{{Symmetry|diagonal2}} | {{Symmetry|diagonal2}} | ||
Revision as of 01:59, 27 December 2019
| Unix | |||||||||
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| Pattern type | Oscillator | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 16 | ||||||||
| Bounding box | 9 × 9 | ||||||||
| Frequency class | 29.3 | ||||||||
| Period | 6 | ||||||||
| Mod | 6 | ||||||||
| Heat | 11.3 | ||||||||
| Volatility | 0.80 | ||||||||
| Strict volatility | 0.80 | ||||||||
| Discovered by | David Buckingham | ||||||||
| Year of discovery | 1976 | ||||||||
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Unix (plural: unices) is a period-6 oscillator that was found by David Buckingham on February 10, 1976. It consists of two blocks eating a long barge and is a useful sparker.[1] Its name derives from the fact that it was for some time the mascot of the Unix lab of the mathematics faculty at the University of Waterloo in Ontario, Canada. With just 16 cells, it is the smallest known period 6 oscillator.[2]
A 5-glider synthesis of this oscillator was found by Goldtiger997 on May 14, 2019, based on a 4-glider collision submitted to Catagolue by Arie Paap in a custom apgsearch symmetry.[3]
Commonness
Unix is about the twenty-sixth most common naturally-occurring oscillator in Achim Flammenkamp's census, being about as common as octagon 2.[4] On Catagolue, it is the most common period 6 oscillator and the only non-trivial one to have appeared naturally, as all others consist of period 2 and 3 rotors that do not interact.[5]
See also
References
- ↑ Dean Hickerson's oscillator stamp collection.
- ↑ "Class 2 Objects Catalog". Retrieved on March 14, 2009.
- ↑ Jeremy Tan (May 14, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on October 27, 2018.
External links
- Unix at the Life Lexicon
- Unix at Adam P. Goucher's Catagolue
- 16P6.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Patterns with Catagolue frequency class 29
- Natural periodic objects
- Oscillators with 16 cells
- Periodic objects with minimum population 16
- Patterns with 16 cells
- Patterns found by David Buckingham
- Patterns found in 1976
- Patterns that can be constructed with 5 gliders
- Oscillators
- Oscillators with period 6
- Oscillators with mod 6
- Oscillators with heat 11
- Oscillators with volatility 0.80
- Oscillators with strict volatility 0.80
- Sparkers
- Sparkers with period 6
- Dot sparkers
- Strong sparkers
- Patterns with bilateral diagonal symmetry