Difference between revisions of "Heptapole"
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{{Oscillator|name=Heptapole|pname=heptapole|p=2| | {{Oscillator | ||
|name = Heptapole | |||
|pname = heptapole | |||
|family = Barberpole | |||
|c = 13 | |||
|bx = 10 | |||
|by = 10 | |||
|p = 2 | |||
|m = 1 | |||
|h = 14 | |||
|v = 0.70 | |||
|discoverer = MIT group | |||
|discoveryear = 1970 | |||
|rulemin = B3/S23 | |||
|rulemax = B35678/S2345678 | |||
|rulespecial = [[Conway's Game of Life|Conway Life]], [[HighLife]] | |||
|isorulemin = B3c/S2ae3n | |||
|isorulemax = B2ckn34-r5678/S1e2345678 | |||
|synthesis = 12 | |||
|synthesisRLE = true | |||
|plaintext = true | |||
|rle = true | |||
|animated = yes | |||
|viewerconfig = #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]] | |||
|apgcode = xp2_31a08zy01050ko | |||
|pentadecathlonid = 13P2.2 | |||
}} | |||
The '''heptapole''' is the [[barberpole]] of length 7. | The '''heptapole''' is the [[barberpole]] of length 7. | ||
== | == [[List of common oscillators|Commonness]] == | ||
Due to its size, it is nowhere near as common as the [[bipole]], [[tripole]] or [[quadpole]]. The first known appearance of the heptapole in a [[symmetric]] [[soup]] was on January 26, {{year|2015}}, in a soup found by [[gameoflifeboy]] using [[apgsearch]].<ref name="post16273" /> | |||
== | It first appeared [[natural]]ly on December 11, {{year|2018}}, in a haul submitted to [[Catagolue]], making it the longest barberpole and the last [[:Category:Periodic objects with minimum population 13|13-bit periodic object]] to have emerged [[natural]]ly.<ref name="post66400" /> | ||
{{ | |||
Much like with the tripole and other barberpoles with diagonal line symmetry, it is much more common in censuses with said symmetries. | |||
== [[Glider synthesis]] == | |||
{{Small constructible periodic object}} | |||
== See also == | |||
* [[Hexapole]] | |||
* [[Octapole]] | |||
== References == | |||
<references> | |||
<ref name="post16273">{{LinkForumThread | |||
|format = ref | |||
|title = Re: Soup search results | |||
|p = 16273 | |||
|author = gameoflifeboy | |||
|date = January 26, 2015 | |||
}}</ref> | |||
<ref name="post66400">{{LinkForumThread | |||
|format = ref | |||
|title = Re: Soup search results | |||
|p = 66400 | |||
|author = Billabob | |||
|date = December 11, 2018 | |||
}}</ref> | |||
</references> | |||
== External links == | |||
{{LinkLexicon|filename=lex_h.htm#heptapole}} | {{LinkLexicon|filename=lex_h.htm#heptapole}} | ||
{{LinkCatagolue|xp2_31a08zy01050ko}} | |||
{{LinkPentadecathlonObject|13P2.2}} | |||
{{Symmetry|diagonal2|osc=flip}} | {{Symmetry|diagonal2|osc=flip}} | ||
{{natural}} | |||
Latest revision as of 13:20, 19 March 2024
| Heptapole | |||||||||
| View animated image | |||||||||
| View static image | |||||||||
| Pattern type | Oscillator | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Family | Barberpole | ||||||||
| Number of cells | 13 | ||||||||
| Bounding box | 10 × 10 | ||||||||
| Period | 2 | ||||||||
| Mod | 1 | ||||||||
| Heat | 14 | ||||||||
| Volatility | 0.70 | ||||||||
| Strict volatility | 0.70 | ||||||||
| Discovered by | MIT group | ||||||||
| Year of discovery | 1970 | ||||||||
| |||||||||
| |||||||||
| |||||||||
| |||||||||
The heptapole is the barberpole of length 7.
Commonness
Due to its size, it is nowhere near as common as the bipole, tripole or quadpole. The first known appearance of the heptapole in a symmetric soup was on January 26, 2015, in a soup found by gameoflifeboy using apgsearch.[1]
It first appeared naturally on December 11, 2018, in a haul submitted to Catagolue, making it the longest barberpole and the last 13-bit periodic object to have emerged naturally.[2]
Much like with the tripole and other barberpoles with diagonal line symmetry, it is much more common in censuses with said symmetries.
Glider synthesis
All strict still lifes with a population of 21 or fewer cells, all oscillators with 16 or fewer cells, and all spaceships with 31 or fewer cells are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right.
See also
References
- ↑ gameoflifeboy (January 26, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Billabob (December 11, 2018). Re: Soup search results (discussion thread) at the ConwayLife.com forums
External links
- Heptapole at the Life Lexicon
- 13P2.2 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Oscillators with 13 cells
- Periodic objects with minimum population 13
- Patterns with 13 cells
- Patterns found by MIT group
- Patterns found in 1970
- Patterns that can be constructed with 12 gliders
- Oscillators
- Barberpole variants
- Oscillators with period 2
- Oscillators with mod 1
- Oscillators with heat 14
- Oscillators with volatility 0.70
- Oscillators with strict volatility 0.70
- Patterns with bilateral diagonal symmetry
- Flipping oscillators
- Natural periodic objects