Twelve loop: Difference between revisions
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}}{{distinguish|Snorkel loop}} | }}{{distinguish|Snorkel loop}} | ||
'''Twelve loop''' is a {{slcells|12|text=12-cell}} [[still life]]. | '''Twelve loop''' is a {{slcells|12|text=12-cell}} [[still life]]. | ||
It can be interpreted as a [[hook]] with an attached [[hooked nine]]. | |||
== Glider synthesis == | |||
A {{gliders|4}} [[Glider synthesis|synthesis]] for this still life is shown below. Several alternate syntheses can be found in [[Mark Niemiec's database]].<ref name="niemiec" /> | |||
{{EmbedViewer | |||
|rle = x = 25, y = 20, rule = B3/S23 | |||
24bo$22b2o$23b2o2$2bo$obo$b2o6$15b2o$15bobo$15bo3$8b3o$10bo$9bo! | |||
|viewerconfig = #C [[ THEME Book ZOOM 10 AUTOSTART GPS 12 T 0 PAUSE 3 T 73 PAUSE 2 LOOP 74 ]] | |||
|position = center | |||
|caption = A 4G synthesis | |||
|style = width:300px; | |||
}} | |||
== Commonness == | == Commonness == | ||
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It is the 147th most common still life on [[Adam P. Goucher]]'s [[Catagolue]] and the 18th most common with 12 cells. | It is the 147th most common still life on [[Adam P. Goucher]]'s [[Catagolue]] and the 18th most common with 12 cells. | ||
The [[octo3obj database]] contains one collision with this still life in the ash.{{refn|Headerless RLE of the collision: {{headerlessRLE|7b2o$7b2o2$7b2o$7b2o$b2o$b2o$9bo$8bobo$2o6bobo$2o7bo2$bo$2o$obo! | |||
{{ | }}}} | ||
== See also == | == See also == | ||
* [[Loop# | * [[Loop#Loop family]] | ||
== References == | |||
<references> | |||
<ref name="niemiec">{{LinkNiemiec|p1-12.htm|The 121 twelve-bit still-lifes|rle=12/12-114.rle|nobullet=nobullet}}</ref> | |||
</references> | |||
== External links == | == External links == | ||
* {{LinkCatagolue|xs12_31egma}} | * {{LinkCatagolue|xs12_31egma}} | ||
* {{LinkPentadecathlonObject|12.35}} | * {{LinkPentadecathlonObject|12.35}} | ||
__NOTOC__ | __NOTOC__ | ||
Revision as of 08:04, 24 October 2022
| Twelve loop | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 12 | ||||||||
| Bounding box | 6 × 5 | ||||||||
| Frequency class | 23.5 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | Robert Wainwright Everett Boyer | ||||||||
| Year of discovery | 1973 | ||||||||
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- Not to be confused with Snorkel loop.
Twelve loop is a 12-cell still life. It can be interpreted as a hook with an attached hooked nine.
Glider synthesis
A 4-glider synthesis for this still life is shown below. Several alternate syntheses can be found in Mark Niemiec's database.[1]
| A 4G synthesis (click above to open LifeViewer) |
Commonness
- Main article: List of common still lifes
It is the 147th most common still life on Adam P. Goucher's Catagolue and the 18th most common with 12 cells.
The octo3obj database contains one collision with this still life in the ash.[2]
See also
References
- ↑ The 121 twelve-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 12/12-114.rle)
- ↑ Headerless RLE of the collision: 7b2o$7b2o2$7b2o$7b2o$b2o$b2o$9bo$8bobo$2o6bobo$2o7bo2$bo$2o$obo!
External links
- Twelve loop at Adam P. Goucher's Catagolue
- 12.35 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Patterns with Catagolue frequency class 23
- Natural periodic objects
- Periodic objects with minimum population 12
- Patterns with 12 cells
- Patterns found by Robert Wainwright
- Patterns found by Everett Boyer
- Patterns found in 1973
- Patterns that can be constructed with 4 gliders
- Still lifes
- Strict still lifes
- Strict still lifes with 12 cells