Hexicated 7-orthoplexes
In seven-dimensional geometry, a hexicated 7-orthoplex (also hexicated 7-cube) is a convex uniform 7-polytope, including 6th-order truncations (hexication) from the regular 7-orthoplex.
| Orthogonal projections in B4 Coxeter plane | ||||
|---|---|---|---|---|
|  7-orthoplex              |  Hexicated 7-orthoplex Hexicated 7-cube              |  Hexi-truncated 7-orthoplex              |  Hexi-cantellated 7-orthoplex              |  Hexicanti-truncated 7-orthoplex              | 
|  Hexirunci-truncated 7-orthoplex              |  Hexirunci-cantellated 7-orthoplex              |  Hexisteri-truncated 7-orthoplex              |  Hexiruncicanti-truncated 7-orthoplex              |  Hexistericanti-truncated 7-orthoplex              | 
|  Hexisterirunci-truncated 7-orthoplex              |  Hexipenticanti-truncated 7-orthoplex              |  Hexisteriruncicanti-truncated 7-orthoplex              |  Hexipentiruncicanti-truncated 7-orthoplex              | |
There are 32 hexications for the 7-orthoplex, including all permutations of truncations, cantellations, runcinations, sterications, and pentellations. 12 are represented here, while 20 are more easily constructed from the 7-cube.
Hexitruncated 7-orthoplex
    
| Hexitruncated 7-orthoplex | |
|---|---|
| Type | Uniform 7-polytope | 
| Schläfli symbol | t0,1,6{35,4 | 
| Coxeter-Dynkin diagrams |              | 
| 6-faces | |
| 5-faces | |
| 4-faces | |
| Cells | |
| Faces | |
| Edges | 29568 | 
| Vertices | 5376 | 
| Vertex figure | |
| Coxeter groups | B7, [4,35] | 
| Properties | convex | 
Alternate names
    
- Petitruncated heptacross
Images
    
| Coxeter plane | B7 / A6 | B6 / D7 | B5 / D6 / A4 | 
|---|---|---|---|
| Graph |  |  |  | 
| Dihedral symmetry | [14] | [12] | [10] | 
| Coxeter plane | B4 / D5 | B3 / D4 / A2 | B2 / D3 | 
| Graph |  |  |  | 
| Dihedral symmetry | [8] | [6] | [4] | 
| Coxeter plane | A5 | A3 | |
| Graph |  |  | |
| Dihedral symmetry | [6] | [4] | 
Hexicantellated 7-orthoplex
     
| Hexicantellated 7-orthoplex | |
|---|---|
| Type | uniform 7-polytope | 
| Schläfli symbol | t0,2,6{35,4} | 
| Coxeter-Dynkin diagrams |              | 
| 6-faces | |
| 5-faces | |
| 4-faces | |
| Cells | |
| Faces | |
| Edges | 94080 | 
| Vertices | 13440 | 
| Vertex figure | |
| Coxeter groups | B7, [4,35] | 
| Properties | convex | 
Alternate names
    
- Petirhombated heptacross
Images
    
| Coxeter plane | B7 / A6 | B6 / D7 | B5 / D6 / A4 | 
|---|---|---|---|
| Graph |  |  |  | 
| Dihedral symmetry | [14] | [12] | [10] | 
| Coxeter plane | B4 / D5 | B3 / D4 / A2 | B2 / D3 | 
| Graph |  |  |  | 
| Dihedral symmetry | [8] | [6] | [4] | 
| Coxeter plane | A5 | A3 | |
| Graph |  |  | |
| Dihedral symmetry | [6] | [4] | 
Hexicantitruncated 7-orthoplex
     
| Hexicantitruncated 7-orthoplex | |
|---|---|
| Type | uniform 7-polytope | 
| Schläfli symbol | t0,1,2,6{35,4} | 
| Coxeter-Dynkin diagrams |              | 
| 6-faces | |
| 5-faces | |
| 4-faces | |
| Cells | |
| Faces | |
| Edges | 134400 | 
| Vertices | 26880 | 
| Vertex figure | |
| Coxeter groups | B7, [4,35] | 
| Properties | convex | 
Alternate names
    
- Petigreatorhombated heptacross
Images
    
| Coxeter plane | B7 / A6 | B6 / D7 | B5 / D6 / A4 | 
|---|---|---|---|
| Graph |  |  |  | 
| Dihedral symmetry | [14] | [12] | [10] | 
| Coxeter plane | B4 / D5 | B3 / D4 / A2 | B2 / D3 | 
| Graph |  |  |  | 
| Dihedral symmetry | [8] | [6] | [4] | 
| Coxeter plane | A5 | A3 | |
| Graph |  |  | |
| Dihedral symmetry | [6] | [4] | 
Hexiruncitruncated 7-orthoplex
     
| Hexiruncitruncated 7-orthoplex | |
|---|---|
| Type | uniform 7-polytope | 
| Schläfli symbol | t0,1,3,6{35,3} | 
| Coxeter-Dynkin diagrams |              | 
| 6-faces | |
| 5-faces | |
| 4-faces | |
| Cells | |
| Faces | |
| Edges | 322560 | 
| Vertices | 53760 | 
| Vertex figure | |
| Coxeter groups | B7, [4,35] | 
| Properties | convex | 
Alternate names
    
- Petiprismatotruncated heptacross
Images
    
| Coxeter plane | B7 / A6 | B6 / D7 | B5 / D6 / A4 | 
|---|---|---|---|
| Graph |  |  |  | 
| Dihedral symmetry | [14] | [12] | [10] | 
| Coxeter plane | B4 / D5 | B3 / D4 / A2 | B2 / D3 | 
| Graph |  |  |  | 
| Dihedral symmetry | [8] | [6] | [4] | 
| Coxeter plane | A5 | A3 | |
| Graph |  |  | |
| Dihedral symmetry | [6] | [4] | 
Hexiruncicantellated 7-orthoplex
     
| Hexiruncicantellated 7-orthoplex | |
|---|---|
| Type | uniform 7-polytope | 
| Schläfli symbol | t0,2,3,6{35,4} | 
| Coxeter-Dynkin diagrams |              | 
| 6-faces | |
| 5-faces | |
| 4-faces | |
| Cells | |
| Faces | |
| Edges | 268800 | 
| Vertices | 53760 | 
| Vertex figure | |
| Coxeter groups | B7, [4,35] | 
| Properties | convex | 
In seven-dimensional geometry, a hexiruncicantellated 7-orthoplex is a uniform 7-polytope.
Alternate names
    
- Petiprismatorhombated heptacross
Images
    
| Coxeter plane | B7 / A6 | B6 / D7 | B5 / D6 / A4 | 
|---|---|---|---|
| Graph |  |  |  | 
| Dihedral symmetry | [14] | [12] | [10] | 
| Coxeter plane | B4 / D5 | B3 / D4 / A2 | B2 / D3 | 
| Graph |  |  |  | 
| Dihedral symmetry | [8] | [6] | [4] | 
| Coxeter plane | A5 | A3 | |
| Graph |  |  | |
| Dihedral symmetry | [6] | [4] | 
Hexisteritruncated 7-orthoplex
     
| hexisteritruncated 7-orthoplex | |
|---|---|
| Type | uniform 7-polytope | 
| Schläfli symbol | t0,1,4,6{35,4} | 
| Coxeter-Dynkin diagrams |              | 
| 6-faces | |
| 5-faces | |
| 4-faces | |
| Cells | |
| Faces | |
| Edges | 322560 | 
| Vertices | 53760 | 
| Vertex figure | |
| Coxeter groups | B7, [4,35] | 
| Properties | convex | 
Alternate names
    
- Peticellitruncated heptacross
Images
    
| Coxeter plane | B7 / A6 | B6 / D7 | B5 / D6 / A4 | 
|---|---|---|---|
| Graph |  |  |  | 
| Dihedral symmetry | [14] | [12] | [10] | 
| Coxeter plane | B4 / D5 | B3 / D4 / A2 | B2 / D3 | 
| Graph |  |  |  | 
| Dihedral symmetry | [8] | [6] | [4] | 
| Coxeter plane | A5 | A3 | |
| Graph |  |  | |
| Dihedral symmetry | [6] | [4] | 
Hexiruncicantitruncated 7-orthoplex
     
| Hexiruncicantitruncated 7-orthoplex | |
|---|---|
| Type | uniform 7-polytope | 
| Schläfli symbol | t0,1,2,3,6{35,4} | 
| Coxeter-Dynkin diagrams |              | 
| 6-faces | |
| 5-faces | |
| 4-faces | |
| Cells | |
| Faces | |
| Edges | 483840 | 
| Vertices | 107520 | 
| Vertex figure | |
| Coxeter groups | B7, [4,35] | 
| Properties | convex | 
Alternate names
    
- Petigreatoprismated heptacross
Images
    
| Coxeter plane | B7 / A6 | B6 / D7 | B5 / D6 / A4 | 
|---|---|---|---|
| Graph |  |  |  | 
| Dihedral symmetry | [14] | [12] | [10] | 
| Coxeter plane | B4 / D5 | B3 / D4 / A2 | B2 / D3 | 
| Graph |  |  |  | 
| Dihedral symmetry | [8] | [6] | [4] | 
| Coxeter plane | A5 | A3 | |
| Graph |  |  | |
| Dihedral symmetry | [6] | [4] | 
Hexistericantitruncated 7-orthoplex
     
| Hexistericantitruncated 7-orthoplex | |
|---|---|
| Type | uniform 7-polytope | 
| Schläfli symbol | t0,1,2,4,6{35,4} | 
| Coxeter-Dynkin diagrams |              | 
| 6-faces | |
| 5-faces | |
| 4-faces | |
| Cells | |
| Faces | |
| Edges | 806400 | 
| Vertices | 161280 | 
| Vertex figure | |
| Coxeter groups | B7, [4,35] | 
| Properties | convex | 
Alternate names
    
- Peticelligreatorhombated heptacross
Images
    
| Coxeter plane | B7 / A6 | B6 / D7 | B5 / D6 / A4 | 
|---|---|---|---|
| Graph |  |  |  | 
| Dihedral symmetry | [14] | [12] | [10] | 
| Coxeter plane | B4 / D5 | B3 / D4 / A2 | B2 / D3 | 
| Graph |  |  |  | 
| Dihedral symmetry | [8] | [6] | [4] | 
| Coxeter plane | A5 | A3 | |
| Graph |  |  | |
| Dihedral symmetry | [6] | [4] | 
Hexisteriruncitruncated 7-orthoplex
     
| Hexisteriruncitruncated 7-orthoplex | |
|---|---|
| Type | uniform 7-polytope | 
| Schläfli symbol | t0,1,3,4,6{35,4} | 
| Coxeter-Dynkin diagrams |              | 
| 6-faces | |
| 5-faces | |
| 4-faces | |
| Cells | |
| Faces | |
| Edges | 725760 | 
| Vertices | 161280 | 
| Vertex figure | |
| Coxeter groups | B7, [4,35] | 
| Properties | convex | 
Alternate names
    
- Peticelliprismatotruncated heptacross
Images
    
| Coxeter plane | B7 / A6 | B6 / D7 | B5 / D6 / A4 | 
|---|---|---|---|
| Graph | too complex |  |  | 
| Dihedral symmetry | [14] | [12] | [10] | 
| Coxeter plane | B4 / D5 | B3 / D4 / A2 | B2 / D3 | 
| Graph |  |  |  | 
| Dihedral symmetry | [8] | [6] | [4] | 
| Coxeter plane | A5 | A3 | |
| Graph |  |  | |
| Dihedral symmetry | [6] | [4] | 
Hexipenticantitruncated 7-orthoplex
     
| hexipenticantitruncated 7-orthoplex | |
|---|---|
| Type | uniform 7-polytope | 
| Schläfli symbol | t0,1,2,5,6{35,4} | 
| Coxeter-Dynkin diagrams |              | 
| 6-faces | |
| 5-faces | |
| 4-faces | |
| Cells | |
| Faces | |
| Edges | 483840 | 
| Vertices | 107520 | 
| Vertex figure | |
| Coxeter groups | B7, [4,35] | 
| Properties | convex | 
Alternate names
    
- Petiterigreatorhombated heptacross
Images
    
| Coxeter plane | B7 / A6 | B6 / D7 | B5 / D6 / A4 | 
|---|---|---|---|
| Graph |  |  |  | 
| Dihedral symmetry | [14] | [12] | [10] | 
| Coxeter plane | B4 / D5 | B3 / D4 / A2 | B2 / D3 | 
| Graph |  |  |  | 
| Dihedral symmetry | [8] | [6] | [4] | 
| Coxeter plane | A5 | A3 | |
| Graph |  |  | |
| Dihedral symmetry | [6] | [4] | 
Hexisteriruncicantitruncated 7-orthoplex
     
| Hexisteriruncicantitruncated 7-orthoplex | |
|---|---|
| Type | uniform 7-polytope | 
| Schläfli symbol | t0,1,2,3,4,6{4,35} | 
| Coxeter-Dynkin diagrams |              | 
| 6-faces | |
| 5-faces | |
| 4-faces | |
| Cells | |
| Faces | |
| Edges | 1290240 | 
| Vertices | 322560 | 
| Vertex figure | |
| Coxeter groups | B7, [4,35] | 
| Properties | convex | 
Alternate names
    
- Great petacellated heptacross
Images
    
| Coxeter plane | B7 / A6 | B6 / D7 | B5 / D6 / A4 | 
|---|---|---|---|
| Graph | too complex |  |  | 
| Dihedral symmetry | [14] | [12] | [10] | 
| Coxeter plane | B4 / D5 | B3 / D4 / A2 | B2 / D3 | 
| Graph |  |  |  | 
| Dihedral symmetry | [8] | [6] | [4] | 
| Coxeter plane | A5 | A3 | |
| Graph |  |  | |
| Dihedral symmetry | [6] | [4] | 
Hexipentiruncicantitruncated 7-orthoplex
     
| Hexipentiruncicantitruncated 7-orthoplex | |
|---|---|
| Type | uniform 7-polytope | 
| Schläfli symbol | t0,1,2,3,5,6{35,3} | 
| Coxeter-Dynkin diagrams |              | 
| 6-faces | |
| 5-faces | |
| 4-faces | |
| Cells | |
| Faces | |
| Edges | 1290240 | 
| Vertices | 322560 | 
| Vertex figure | |
| Coxeter groups | B7, [4,35] | 
| Properties | convex | 
Alternate names
    
- Petiterigreatoprismated heptacross
Images
    
| Coxeter plane | B7 / A6 | B6 / D7 | B5 / D6 / A4 | 
|---|---|---|---|
| Graph | too complex |  |  | 
| Dihedral symmetry | [14] | [12] | [10] | 
| Coxeter plane | B4 / D5 | B3 / D4 / A2 | B2 / D3 | 
| Graph |  |  |  | 
| Dihedral symmetry | [8] | [6] | [4] | 
| Coxeter plane | A5 | A3 | |
| Graph |  |  | |
| Dihedral symmetry | [6] | [4] | 
Notes
    
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, PhD (1966)
 
- Klitzing, Richard. "7D uniform polytopes (polyexa)".
External links
    
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