Long barge
| Long barge | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 8 | ||||||||
| Bounding box | 5 × 5 | ||||||||
| Frequency class | 11.8 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | JHC group | ||||||||
| Year of discovery | 1970 | ||||||||
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Long barge is an 8-cell still life discovered by the JHC group in 1970.[1] It is a long version of a barge. It can be trivially extended to produce ever longer barges.
It can "eat" two domino sparks, such as those produced by pentadecathlon; said sparks can be replaced with blocks to form unix.
Commonness
Long barge is the fourteenth most common still life in Achim Flammenkamp's census, being less common than eater 1 but more common than aircraft carrier[2] It is also the nineteenth most common object on Adam P. Goucher's Catagolue.[3]
The barge is 7.5 times as common as the long barge, but the long barge is 12,000 times as common as the very long barge. In diagonal symmetries (including 8-fold symmetry), the long barge is the eleventh most common object, which makes it more common than the barge.
Gallery
Long barges are almost always formed by a symmetric or near-symmetric active region hitting a pond. (click above to open LifeViewer) |
Longer versions
Since the barge is infinitely extensible, there are an infinite number of long^n barges, one for every positive n:
Very long barge
- Main article: Very long barge
Long^3 barge
- Main article: Long^3 barge
Long^4 barge
Long4 barge (or remarkably long barge) is the long^4 version of the barge. It is a 14-bit still life.
Long^5 barge
Long5 barge (or very4 long barge) is the long^5 version of the barge. It is a 16-bit still life.
Long^6 barge
Long6 barge (or very5 long barge) is the long^6 version of the barge. It is a 18-bit still life.
References
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on June 18, 2009.
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on March 30, 2010.
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
External links
- Long barge at the Life Lexicon
- The 9 eight-bit still-lifes at Mark D. Niemiec's Life Page
- 14.598 at Heinrich Koenig's Game of Life Object Catalogs
- 16.3111 at Heinrich Koenig's Game of Life Object Catalogs
- 18.17791 at Heinrich Koenig's Game of Life Object Catalogs
| Vessels | |
|---|---|
| No corners (barges) | (^-2) • (^-1) • ^0 • ^1 • ^2 • ^3 |
| One corner (boats) | (^-2) • (^-1) • ^0 • ^1 • ^2 • ^3 |
| Two corners (ships) | (^-1) • ^0 • ^1 • ^2 • ^3 |
- Patterns
- Patterns with Catagolue frequency class 11
- Natural periodic objects
- Periodic objects with minimum population 8
- Patterns with 8 cells
- Patterns found by JHC group
- Patterns found in 1970
- Patterns that can be constructed with 3 gliders
- Still lifes
- Strict still lifes
- Strict still lifes with 8 cells
- Patterns with rectangular diagonal symmetry