Boat
The boat is the only still life with 5 cells and was discovered by the JHC group in 1970.[1] It can be thought of as a tub with an extra cell in one of the corners, or a ship with one of the corner cells removed. Like the tub and the ship, it is infinitely extensible (see long boat).
| Boat | |||||||||||
| |||||||||||
| View static image | |||||||||||
| Pattern type | Strict still life | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 5 | ||||||||||
| Bounding box | 3×3 | ||||||||||
| Frequency class | 2.8 | ||||||||||
| Discovered by | JHC group | ||||||||||
| Year of discovery | 1970 | ||||||||||
| |||||||||||
| |||||||||||
| |||||||||||
| |||||||||||
The boat can be hit by a glider to cleanly produce another glider, travelling perpendicular to the direction of the input glider. It is thus a one-time reflector.
Commonness
The boat is the fourth most common still life in Achim Flammenkamp's census, being slightly less common than loaf and over four times as common as tub.[2] It is also the sixth most common object on Adam P. Goucher's Catagolue.[3]
gollark: > I am going to shoot you for use of web Discordweb discord > electron app discord
gollark: hd!histodev <@!258639553357676545>
gollark: Or, well, activity alone, whatever.
gollark: Activity does not a good administratorator make.
gollark: +histodev <@319753218592866315>
References
- Dean Hickerson's oscillator stamp collection. Retrieved on June 18, 2009.
- Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
External links
- Boat at the Life Lexicon
- Boat at Adam P. Goucher's Catagolue
- The 1 five-bit still-life at Mark D. Niemiec's Life Page
| Vessels | |
|---|---|
| No corners (barges) | (^-2) • (^-1) • ^0 • ^1 • ^2 • ^3 • ^4 • ^5 • ^6 • ^7 • ^8 • ^9 |
| One corner (boats) | (^-2) • (^-1) • ^0 • ^1 • ^2 • ^3 • ^4 • ^5 • ^6 • ^7 • ^8 • ^9 • ^10 |
| Two corners (ships) | (^-1) • ^0 • ^1 • ^2 • ^3 • ^4 • ^5 • ^6 • ^7 • ^8 • ^9 • ^10 |
This article is issued from Conwaylife. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.