Octagonal tiling
Regular tiling of the hyperbolic plane
| Octagonal tiling | |
|---|---|
Poincaré disk model of the hyperbolic plane | |
| Type | Hyperbolic regular tiling |
| Vertex configuration | 83 |
| Schläfli symbol | {8,3} t{4,8} |
| Wythoff symbol | 3 | 8 2 2 8 | 4 4 4 4 | |
| Coxeter diagram | |
| Symmetry group | [8,3], (*832) [8,4], (*842) [(4,4,4)], (*444) |
| Dual | Order-8 triangular tiling |
| Properties | Vertex-transitive, edge-transitive, face-transitive |
In geometry, the octagonal tiling is a regular tiling of the hyperbolic plane. It is represented by Schläfli symbol of {8,3}, having three regular octagons around each vertex. It also has a construction as a truncated order-8 square tiling, t{4,8}.
01Uniform colorings
Like the hexagonal tiling of the Euclidean plane, there are 3 uniform colorings of this hyperbolic tiling. The dual tiling V8.8.8 represents the fundamental domains of [(4,4,4)] symmetry.
| Regular | Truncations | ||
|---|---|---|---|
{8,3} |
t{4,8} |
t{4[3]} = = | |
| Dual tiling | |||
{3,8} = |
= |
= = | |
02Regular maps
The regular map {8,3}2,0 can be seen as a 6-coloring of the {8,3} hyperbolic tiling. Within the regular map, octagons of the same color are considered the same face shown in multiple locations. The 2,0 subscripts show the same color will repeat by moving 2 steps in a straight direction following opposite edges. This regular map also has a representation as a double covering of a cube, represented by Schläfli symbol {8/2,3}, with 6 octagonal faces, double wrapped {8/2}, with 24 edges, and 16 vertices. It was described by Branko Grünbaum in his 2003 paper Are Your Polyhedra the Same as My Polyhedra?
Sources and credits
This article is adapted from the Wikipedia article “Octagonal tiling”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- H2-8-3-dual.svg by Parcly Taxel, Public domain
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