Difference between revisions of "Barge"
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Revision as of 07:59, 24 August 2024
| Barge | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 6 | ||||||||
| Bounding box | 4 × 4 | ||||||||
| Frequency class | 8.9 | ||||||||
| Static symmetry | D4_x4 | ||||||||
| Discovered by | JHC group | ||||||||
| Year of discovery | 1970 | ||||||||
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- This article is about the 6-cell still life. For the extensible c/3 spaceship, see Barge (spaceship).
The barge is a common 6-cell still life discovered by the JHC group in 1970.[1] It is infinitely extensible, and can be seen as a long version of the tub.
Commonness
- Main article: List of common still lifes
Barge is the tenth most common still life on Adam P. Goucher's Catagolue, being less common than ship-tie but more common than half-bakery. Among all still lifes with 6 cells, it is the third most common, being less common than ship but more common than aircraft carrier.[2]It is also the fourteenth most common object overall on Catagolue.
In Achim Flammenkamp's census, the barge was also ranked tenth most common, again between the ship-tie and half-bakery.[3]
Glider synthesis
All strict still lifes with a population of 23 or fewer cells, all oscillators with 16 or fewer cells, and all spaceships with 35 or fewer cells are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right.
Extensibility
Barge can be infinitely extended, as illustrated by the following:
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Gallery
| Occasionally, a constellation of two barges aligned with each other can be seen. It is produced by this sequence, which is ranked #408 in census.rle. (click above to open LifeViewer) |
See also
References
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on June 18, 2009.
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on June 6, 2013.
External links
- Barge at the Life Lexicon
- Barge at Adam P. Goucher's Catagolue
- The 5 six-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 0/6bg.rle)
- Barge 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 8
- Natural periodic objects
- Periodic objects with minimum population 6
- Patterns with 6 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 6 cells
- Strict still lifes with D4 x4 symmetry