Truncated 6-cubes
In six-dimensional geometry, a truncated 6-cube (or truncated hexeract) is a convex uniform 6-polytope, being a truncation of the regular 6-cube.
6-cube |
Truncated 6-cube |
Bitruncated 6-cube |
Tritruncated 6-cube |
6-orthoplex |
Truncated 6-orthoplex |
Bitruncated 6-orthoplex | |
Orthogonal projections in B6 Coxeter plane |
---|
There are 5 truncations for the 6-cube. Vertices of the truncated 6-cube are located as pairs on the edge of the 6-cube. Vertices of the bitruncated 6-cube are located on the square faces of the 6-cube. Vertices of the tritruncated 6-cube are located inside the cubic cells of the 6-cube.
Truncated 6-cube
Truncated 6-cube | |
---|---|
Type | uniform 6-polytope |
Class | B6 polytope |
Schläfli symbol | t{4,3,3,3,3} |
Coxeter-Dynkin diagrams | |
5-faces | 76 |
4-faces | 464 |
Cells | 1120 |
Faces | 1520 |
Edges | 1152 |
Vertices | 384 |
Vertex figure | ( )v{3,3,3} |
Coxeter groups | B6, [3,3,3,3,4] |
Properties | convex |
Alternate names
- Truncated hexeract (Acronym: tox) (Jonathan Bowers)[1]
Construction and coordinates
The truncated 6-cube may be constructed by truncating the vertices of the 6-cube at of the edge length. A regular 5-simplex replaces each original vertex.
The Cartesian coordinates of the vertices of a truncated 6-cube having edge length 2 are the permutations of:
Images
Coxeter plane | B6 | B5 | B4 |
---|---|---|---|
Graph | |||
Dihedral symmetry | [12] | [10] | [8] |
Coxeter plane | B3 | B2 | |
Graph | |||
Dihedral symmetry | [6] | [4] | |
Coxeter plane | A5 | A3 | |
Graph | |||
Dihedral symmetry | [6] | [4] |
Related polytopes
The truncated 6-cube, is fifth in a sequence of truncated hypercubes:
Image | ... | |||||||
---|---|---|---|---|---|---|---|---|
Name | Octagon | Truncated cube | Truncated tesseract | Truncated 5-cube | Truncated 6-cube | Truncated 7-cube | Truncated 8-cube | |
Coxeter diagram | ||||||||
Vertex figure | ( )v( ) | ( )v{ } |
( )v{3} |
( )v{3,3} |
( )v{3,3,3} | ( )v{3,3,3,3} | ( )v{3,3,3,3,3} |
Bitruncated 6-cube
Bitruncated 6-cube | |
---|---|
Type | uniform 6-polytope |
Class | B6 polytope |
Schläfli symbol | 2t{4,3,3,3,3} |
Coxeter-Dynkin diagrams | |
5-faces | |
4-faces | |
Cells | |
Faces | |
Edges | |
Vertices | |
Vertex figure | { }v{3,3} |
Coxeter groups | B6, [3,3,3,3,4] |
Properties | convex |
Alternate names
- Bitruncated hexeract (Acronym: botox) (Jonathan Bowers)[2]
Construction and coordinates
The Cartesian coordinates of the vertices of a bitruncated 6-cube having edge length 2 are the permutations of:
Images
Coxeter plane | B6 | B5 | B4 |
---|---|---|---|
Graph | |||
Dihedral symmetry | [12] | [10] | [8] |
Coxeter plane | B3 | B2 | |
Graph | |||
Dihedral symmetry | [6] | [4] | |
Coxeter plane | A5 | A3 | |
Graph | |||
Dihedral symmetry | [6] | [4] |
Related polytopes
The bitruncated 6-cube is fourth in a sequence of bitruncated hypercubes:
Image | ... | ||||||
---|---|---|---|---|---|---|---|
Name | Bitruncated cube | Bitruncated tesseract | Bitruncated 5-cube | Bitruncated 6-cube | Bitruncated 7-cube | Bitruncated 8-cube | |
Coxeter | |||||||
Vertex figure | ( )v{ } |
{ }v{ } |
{ }v{3} |
{ }v{3,3} |
{ }v{3,3,3} | { }v{3,3,3,3} |
Tritruncated 6-cube
Tritruncated 6-cube | |
---|---|
Type | uniform 6-polytope |
Class | B6 polytope |
Schläfli symbol | 3t{4,3,3,3,3} |
Coxeter-Dynkin diagrams | |
5-faces | |
4-faces | |
Cells | |
Faces | |
Edges | |
Vertices | |
Vertex figure | {3}v{4}[3] |
Coxeter groups | B6, [3,3,3,3,4] |
Properties | convex |
Alternate names
- Tritruncated hexeract (Acronym: xog) (Jonathan Bowers)[4]
Construction and coordinates
The Cartesian coordinates of the vertices of a tritruncated 6-cube having edge length 2 are the permutations of:
Images
Coxeter plane | B6 | B5 | B4 |
---|---|---|---|
Graph | |||
Dihedral symmetry | [12] | [10] | [8] |
Coxeter plane | B3 | B2 | |
Graph | |||
Dihedral symmetry | [6] | [4] | |
Coxeter plane | A5 | A3 | |
Graph | |||
Dihedral symmetry | [6] | [4] |
Related polytopes
Dim. | 2 | 3 | 4 | 5 | 6 | 7 | 8 | n |
---|---|---|---|---|---|---|---|---|
Name | t{4} | r{4,3} | 2t{4,3,3} | 2r{4,3,3,3} | 3t{4,3,3,3,3} | 3r{4,3,3,3,3,3} | 4t{4,3,3,3,3,3,3} | ... |
Coxeter diagram |
||||||||
Images | ||||||||
Facets | {3} {4} |
t{3,3} t{3,4} |
r{3,3,3} r{3,3,4} |
2t{3,3,3,3} 2t{3,3,3,4} |
2r{3,3,3,3,3} 2r{3,3,3,3,4} |
3t{3,3,3,3,3,3} 3t{3,3,3,3,3,4} | ||
Vertex figure |
( )v( ) | { }×{ } |
{ }v{ } |
{3}×{4} |
{3}v{4} |
{3,3}×{3,4} | {3,3}v{3,4} |
Related polytopes
These polytopes are from a set of 63 Uniform 6-polytopes generated from the B6 Coxeter plane, including the regular 6-cube or 6-orthoplex.
Notes
- Klitzing, (o3o3o3o3x4x - tox)
- Klitzing, (o3o3o3x3x4o - botox)
- https://bendwavy.org/klitzing/incmats/squete.htm
- Klitzing, (o3o3x3x3o4o - xog)
References
- H.S.M. Coxeter:
- H.S.M. Coxeter, Regular Polytopes, 3rd Edition, Dover New York, 1973
- Kaleidoscopes: Selected Writings of H.S.M. Coxeter, edited by F. Arthur Sherk, Peter McMullen, Anthony C. Thompson, Asia Ivic Weiss, Wiley-Interscience Publication, 1995, ISBN 978-0-471-01003-6
- (Paper 22) H.S.M. Coxeter, Regular and Semi Regular Polytopes I, [Math. Zeit. 46 (1940) 380-407, MR 2,10]
- (Paper 23) H.S.M. Coxeter, Regular and Semi-Regular Polytopes II, [Math. Zeit. 188 (1985) 559-591]
- (Paper 24) H.S.M. Coxeter, Regular and Semi-Regular Polytopes III, [Math. Zeit. 200 (1988) 3-45]
- Norman Johnson Uniform Polytopes, Manuscript (1991)
- N.W. Johnson: The Theory of Uniform Polytopes and Honeycombs, Ph.D.
- Klitzing, Richard. "6D uniform polytopes (polypeta)". o3o3o3o3x4x - tox, o3o3o3x3x4o - botox, o3o3x3x3o4o - xog
External links
- Weisstein, Eric W. "Hypercube". MathWorld.
- Polytopes of Various Dimensions
- Multi-dimensional Glossary