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'''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> | '''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> | ||
== [[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 until 2020, it was the only non-trivial one to have appeared naturally, as all others consisted of period {{period|2|brief}} and {{period|3|brief}} [[rotor]]s that do not interact.<ref>{{citeCatagolueStats|October 27, 2018}}</ref> However, on May 8, {{year|2020}}, an oscillator appeared naturally consisting of a unix whose spark is suppressed on one side by a [[clock]].<ref name="post96410" /> | |||
== [[Glider synthesis]] == | |||
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" /> | 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" /> | ||
== See also == | |||
* [[p18 bi-block hassler]] | |||
* [[Unicycle]] | |||
==See also== | |||
*[[p18 bi-block hassler]] | |||
*[[Unicycle]] | |||
==References== | == References == | ||
<references> | <references> | ||
<ref name="post76180">{{LinkForumThread | <ref name="post76180">{{LinkForumThread | ||
| Line 56: | Line 57: | ||
</references> | </references> | ||
==External links== | == External links == | ||
{{LinkLexicon|lex_u.htm#unix}} | {{LinkLexicon|lex_u.htm#unix}} | ||
{{LinkCatagolue|xp6_ccb7w66z066}} | {{LinkCatagolue|xp6_ccb7w66z066}} | ||
{{LinkPentadecathlonObject|16P6.1}} | {{LinkPentadecathlonObject|16P6.1}} | ||
{{Sparker|p=6|type=dot|strength=strong}} | {{Sparker|p=6|type=dot|strength=strong}} | ||
{{Symmetry|diagonal2}} | {{Symmetry|diagonal2}} | ||
Revision as of 04:49, 24 December 2021
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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 | 0.80 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| 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]
Unix is about the twenty-sixth most common naturally-occurring oscillator in Achim Flammenkamp's census, being about as common as octagon 2.[3] On Catagolue, it is the most common period 6 oscillator and until 2020, it was the only non-trivial one to have appeared naturally, as all others consisted of period 2 and 3 rotors that do not interact.[4] However, on May 8, 2020, an oscillator appeared naturally consisting of a unix whose spark is suppressed on one side by a clock.[5]
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.[6]
See also
References
- ↑ Dean Hickerson's oscillator stamp collection.
- ↑ "Class 2 Objects Catalog". Retrieved on March 14, 2009.
- ↑ 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.
- ↑ praosylen (May 8, 2020). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Jeremy Tan (May 14, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
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