Bi-block: Difference between revisions
Jump to navigation
Jump to search
MathAndCode (talk | contribs) m →Image gallery: Fixed table formatting |
m replaced rle with pname in viewer |
||
| Line 25: | Line 25: | ||
==Image gallery== | ==Image gallery== | ||
<center> | |||
{| | {| | ||
|- | |- | ||
|{{EmbedViewer | |{{EmbedViewer | ||
| | |pname = triblock | ||
|viewerconfig = #C [[ GPS 8 THUMBSIZE 2 ]] | |viewerconfig = #C [[ GPS 8 THUMBSIZE 2 ]] | ||
|caption = | |position = center | ||
|caption = Triblock<br/> | |||
}} | }} | ||
|{{EmbedViewer | |{{EmbedViewer | ||
| | |pname = 2by3groupofblocks | ||
|viewerconfig = #C [[ GPS 8 THUMBSIZE 2 ]] | |viewerconfig = #C [[ GPS 8 THUMBSIZE 2 ]] | ||
|caption = About ⅓ as common as the | |position = center | ||
|caption = 2×3 group of blocks<br/> | |||
}} | |||
|- | |||
|{{EmbedViewer | |||
|pname = biblockpredecessor1 | |||
|position = center | |||
|viewerconfig = #C [[ GPS 8 THUMBSIZE 2 ]] | |||
|caption = Common predecessor of bi-block<br/>plus one other unrelated block<br/> | |||
}} | |||
|{{EmbedViewer | |||
|pname = biblockpredecessor2 | |||
|position = center | |||
|viewerconfig = #C [[ GPS 8 THUMBSIZE 2 ]] | |||
|caption = About ⅓ as common as the previous pattern,<br/>and creates just a bi-block and nothing else<br/> | |||
}} | }} | ||
|{{EmbedViewer | |{{EmbedViewer | ||
| | |pname = biblockpredecessor3 | ||
|position = | |position = center | ||
|viewerconfig = #C [[ GPS 8 THUMBSIZE 2 ]] | |viewerconfig = #C [[ GPS 8 THUMBSIZE 2 ]] | ||
|caption = another small predecessor of a clean bi-block, whose great-great-grandchild is fairly common | |caption = another small predecessor of a clean bi-block,<br/>whose great-great-grandchild is fairly common<br/> | ||
}} | }} | ||
|} | |} | ||
</center> | |||
==References== | ==References== | ||
Revision as of 18:29, 24 October 2021
| Bi-block | |||||||||
| View static image | |||||||||
| Pattern type | Pseudo still life | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 8 | ||||||||
| Bounding box | 5 × 2 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
| |||||||||
| |||||||||
| |||||||||
| |||||||||
The bi-block is a common formation of two blocks and the smallest and most common[1] pseudo still life. Similar pseudo still lifes can be formed by considering any rectangular array of blocks, some of which are shown below.
Commonness
The bi-block is about ¼ as common as the pond, the most common 8-bit strict still life. Compared to other strict still lifes, it it is more common than the ship-tie but less common than the long boat.[2] In odd orthogonal symmetries, bi-blocks are more common, as gliders in the same phase that collide in odd symmetry form a bi-block.
Counting both strict and pseudo still lifes, the tri-block is the 9th most common 12-bit still life, and it would rank third behind the ship-tie and table on table but ahead of the block on cap if it were strict. Unlike the bi-block, tri-blocks must form by chance.
Image gallery
|
| |||||||
|
|
|
References
- ↑ "Census Results in Conway's Game of Life". Online Life-Like CA Soup Search. Retrieved on July 12, 2009.
- ↑ https://catagolue.hatsya.com/census/b3s23/Pseudo_C1/xs8
External links
- Bi-block at the Life Lexicon
- Bi-block at Adam P. Goucher's Catagolue (pseudo-object)