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 | ||||||||
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 extension of a barge.
It can "eat" two domino sparks, such as those produced by pentadecathlon; said sparks can be replaced with blocks to form unix.
Commonness
- Main article: List of common still lifes
Long barge is the fourteenth most common still life on Adam P. Goucher's Catagolue, being less common than eater 1 but more common than aircraft carrier. Among all still lifes with 8 cells, it is the third most common, being less common than mango but more common than long ship.[2]It is also the nineteenth most common object overall on Catagolue. In Achim Flammenkamp's census, the long barge was also ranked fourteenth most common, again between eater 1 and aircraft carrier.[3]
Occurrence
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. Reactions which form the long barge are demonstrated below.
Long barges are usually formed in a symmetric or near-symmetric active reaction hitting a pond (click above to open LifeViewer) RLE: here Plaintext: here |
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.
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 March 30, 2010.
External links
- Long barge at the Life Lexicon
- Long barge at Adam P. Goucher's Catagolue
- The 9 eight-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 0/8lg.rle)
- Long barge at Heinrich Koenig's Game of Life Object Catalogs
- 14.598 at Heinrich Koenig's Game of Life Object Catalogs
- Long^4 barge at Adam P. Goucher's Catagolue
- 16.3111 at Heinrich Koenig's Game of Life Object Catalogs
- Long^5 barge at Adam P. Goucher's Catagolue
- 18.17791 at Heinrich Koenig's Game of Life Object Catalogs
- Long^6 barge at Adam P. Goucher's Catagolue
Vessels | |
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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