Order-6 cubic honeycomb
Order-6 cubic honeycomb | |
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Perspective projection view within Poincaré disk model | |
Type | Hyperbolic regular honeycomb Paracompact uniform honeycomb |
Schläfli symbol | {4,3,6} {4,3[3]} |
Coxeter diagram | ↔ ↔ |
Cells | {4,3} |
Faces | square {4} |
Edge figure | pentagon {6} |
Vertex figure | triangular tiling {3,6} |
Coxeter group | BV3, [6,3,4] BP3, [4,3[3]] |
Dual | Order-4 hexagonal tiling honeycomb |
Properties | Regular, quasiregular |
The order-6 cubic honeycomb is a paracompact regular space-filling tessellations (or honeycombs) in hyperbolic 3-space. It is called paracompact because it has infinite vertex figures, with all vertices as ideal points at infinity. With schläfli symbol {4,3,6}, it is constructed from six cubes exist on each edge. Its vertex figure is an infinite triangular tiling. It is dual is the order-4 hexagonal tiling honeycomb.
A geometric honeycomb is a space-filling of polyhedral or higher-dimensional cells, so that there are no gaps. It is an example of the more general mathematical tiling or tessellation in any number of dimensions.
Honeycombs are usually constructed in ordinary Euclidean ("flat") space, like the convex uniform honeycombs. They may also be constructed in non-Euclidean spaces, such as hyperbolic uniform honeycombs. Any finite uniform polytope can be projected to its circumsphere to form a uniform honeycomb in spherical space.
Images
It is similar to the 2D hyperbolic infinite-order square tiling, {4,∞} with square faces. All vertices are on the ideal surface.
Symmetry
A half symmetry construction exists as {4,3[3]}, with alternating two types (colors) of cubic cells. ↔ . Another lower symmetry, [4,3*,6], index 6 exists with a nonsimplex fundamental domain, .
This honeycomb contains that tile 2-hypercycle surfaces, similar to this paracompact tiling, :
Related polytopes and honeycombs
It is one of 15 regular hyperbolic honeycombs in 3-space, 11 of which like this one are paracompact, with infinite cells or vertex figures.
It is related to the regular (order-4) cubic honeycomb of Euclidean 3-space, order-5 cubic honeycomb in hyperbolic space, which have 4 and 5 cubes per edge respectively.
It has a related alternation honeycomb, represented by ↔ , having hexagonal tiling and tetrahedron cells.
There are fifteen uniform honeycombs in the [6,3,4] Coxeter group family, including this regular form.
It in a sequence of regular polychora and honeycombs with cubic cells.
It a part of a sequence of honeycombs with triangular tiling vertex figures.
Form | Paracompact | Noncompact | |||||
---|---|---|---|---|---|---|---|
Name | {3,3,6} | {4,3,6} | {5,3,6} | {6,3,6} | {7,3,6} | {8,3,6} | ... {∞,3,6} |
Image | |||||||
Cells | {3,3} |
{4,3} |
{5,3} |
{6,3} |
{7,3} |
{8,3} |
{∞,3} |
Rectified order-6 cubic honeycomb
Rectified order-6 cubic honeycomb | |
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Type | Paracompact uniform honeycomb |
Schläfli symbols | r{4,3,6} or t1{4,3,6} |
Coxeter diagrams | ↔ ↔ ↔ |
Cells | r{3,4} {3,6} |
Faces | Triangle {3} Square {4} |
Vertex figure | hexagonal prism {}×{6} |
Coxeter groups | BV3, [6,3,4] DV3, [6,31,1] [4,3[3]] [3[ ]×[3]] |
Properties | Vertex-transitive, edge-transitive |
The rectified order-6 cubic honeycomb, r{4,3,6}, has cuboctahedral and triangular tiling facets, with a hexagonal prism vertex figure.
It is similar to the 2D hyperbolic tetraapeirogonal tiling, r{4,∞}, alternating apeirogonal and square faces:
Space | H3 | ||||||
---|---|---|---|---|---|---|---|
Form | Paracompact | Noncompact | |||||
Name | r{3,3,6} |
r{4,3,6} |
r{5,3,6} |
r{6,3,6} |
r{7,3,6} |
... r{∞,3,6} | |
Image | |||||||
Cells {3,6} |
r{3,3} |
r{4,3} |
r{6,3} |
r{6,3} |
r{∞,3} |
r{∞,3} |
Truncated order-6 cubic honeycomb
Truncated order-6 cubic honeycomb | |
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Type | Paracompact uniform honeycomb |
Schläfli symbols | t{4,3,6} or t0,1{4,3,6} |
Coxeter diagrams | ↔ |
Cells | t{4,3} {3,6} |
Faces | Triangle {3} octagon {8} |
Vertex figure | hexagonal pyramid |
Coxeter groups | BV3, [6,3,4] [4,3[3]] |
Properties | Vertex-transitive |
The truncated order-6 cubic honeycomb, t{4,3,6}, has truncated octahedron and triangular tiling facets, with a hexagonal pyramid vertex figure.
It is similar to the 2D hyperbolic truncated infinite-order square tiling, t{4,∞}, with apeirogonal and octagonal (truncated square) faces:
Cantellated order-6 cubic honeycomb
Cantellated order-6 cubic honeycomb | |
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Type | Paracompact uniform honeycomb |
Schläfli symbols | rr{4,3,6} or t0,2{4,3,6} |
Coxeter diagrams | ↔ |
Cells | rr{4,3} r{3,6} |
Faces | Triangle {3} square {4} hexagon {6} octagon {8} |
Vertex figure | triangular prism |
Coxeter groups | BV3, [6,3,4] [4,3[3]] |
Properties | Vertex-transitive |
The cantellated order-6 cubic honeycomb, rr{4,3,6}, has rhombicuboctahedron and trihexagonal tiling facets, with a triangular prism vertex figure.
Alternated order-6 cubic honeycomb
Alternated order-6 cubic honeycomb | |
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Type | Paracompact uniform honeycomb Semiregular honeycomb |
Schläfli symbol | h{4,3,6} |
Coxeter diagram | ↔ ↔ ↔ ↔ |
Cells | {3,3} {3,6} |
Faces | Triangle {3} |
Vertex figure | trihexagonal tiling |
Coxeter group | DV3, [6,31,1] |
Properties | Vertex-transitive, edge-transitive, quasiregular |
In 3-dimensional hyperbolic geometry, the alternated order-6 hexagonal tiling honeycomb is a uniform compact space-filling tessellations (or honeycombs). As an alternated order-6 cubic honeycomb and Schläfli symbol h{4,3,6}, with Coxeter diagram or . It can be considered a quasiregular honeycomb, alternating triangular tiling and tetrahedron around each vertex in an trihexagonal tiling vertex figure.
Symmetry
A half symmetry construction exists from {4,3[3]}, with alternating two types (colors) of cubic cells. ↔ . Another lower symmetry, [4,3*,6], index 6 exists with a nonsimplex fundamental domain, .
Related honeycombs
Quasiregular polychora and honeycombs: h{4,p,q}
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It has 3 related form cantic order-6 cubic honeycomb, h2{4,3,6}, , runcic order-6 cubic honeycomb, h3{4,3,6}, , runcicantic order-6 cubic honeycomb, h2,3{4,3,6}, .
Cantic order-6 cubic honeycomb
Cantic order-6 cubic honeycomb | |
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Type | Paracompact uniform honeycomb |
Schläfli symbol | h2{4,3,6} |
Coxeter diagram | ↔ ↔ ↔ |
Cells | t{3,3} r{6,3} {6,3} |
Faces | Triangle {3} hexagon {6} |
Vertex figure | |
Coxeter group | DV3, [6,31,1] |
Properties | Vertex-transitive |
The cantic order-6 cubic honeycomb is a uniform compact space-filling tessellations (or honeycombs) with Schläfli symbol h2{4,3,6}.
Runcic order-6 cubic honeycomb
Runcic order-6 cubic honeycomb | |
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Type | Paracompact uniform honeycomb |
Schläfli symbol | h3{4,3,6} |
Coxeter diagram | ↔ |
Cells | {3,3} {6,3} rr{6,3} |
Faces | Triangle {3} hexagon {6} |
Vertex figure | triangular prism |
Coxeter group | DV3, [6,31,1] |
Properties | Vertex-transitive |
The runcic order-6 cubic honeycomb is a uniform compact space-filling tessellations (or honeycombs). With Schläfli symbol h3{4,3,6}, with a triangular prism vertex figure.
Runcicantic order-6 cubic honeycomb
Runcicantic order-6 cubic honeycomb | |
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Type | Paracompact uniform honeycomb |
Schläfli symbol | h2,3{4,3,6} |
Coxeter diagram | ↔ |
Cells | {6,3} tr{6,3} {3,3} |
Faces | Triangle {3} square {4} |
Vertex figure | tetrahedron |
Coxeter group | DV3, [6,31,1] |
Properties | Vertex-transitive |
The runcicantic order-6 cubic honeycomb is a uniform compact space-filling tessellations (or honeycombs). With Schläfli symbol h2,3{4,3,6}, with a tetrahedral vertex figure.
See also
References
- Coxeter, Regular Polytopes, 3rd. ed., Dover Publications, 1973. ISBN 0-486-61480-8. (Tables I and II: Regular polytopes and honeycombs, pp. 294–296)
- The Beauty of Geometry: Twelve Essays (1999), Dover Publications, LCCN 99-35678, ISBN 0-486-40919-8 (Chapter 10, Regular Honeycombs in Hyperbolic Space) Table III
- Jeffrey R. Weeks The Shape of Space, 2nd edition ISBN 0-8247-0709-5 (Chapter 16-17: Geometries on Three-manifolds I,II)
- Norman Johnson Uniform Polytopes, Manuscript
- N.W. Johnson: The Theory of Uniform Polytopes and Honeycombs, Ph.D. Dissertation, University of Toronto, 1966
- N.W. Johnson: Geometries and Transformations, (2015) Chapter 13: Hyperbolic Coxeter groups