Cylinder
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A cylinder can refer to one of two possible Life universe types (i.e. bounded grids).
Finite cylinders
A finite cylinder identifies two opposite ends as connected analogously to a torus, whereas the other two opposing ends are boundaries (i.e. act like the edges of a plane bounded grid).
It is the structure on which second stage de Bruijn diagrams are defined, where X acts as a torus and Y acts as a plane.
Currently, explicit software support for this is unknown.
Infinite cylinders
An infinite cylinder is a semi-infinite Life universe that takes the form of a strip n cells wide (or high) and infinitely long. It may be visualized as a cylinder of circumference n, obtained by taking opposite edges of the strip as neighbors.
| A glider traveling across a cylindrical universe (click above to open LifeViewer) RLE: here Plaintext: here |
External links
- Cylinder at Wikipedia
- Bounded grids at Golly's online help