Cantellated 7-orthoplex

7-orthoplex	Cantellated 7-orthoplex	Bicantellated 7-orthoplex	Birectified 7-orthoplex
Cantitruncated 7-orthoplex	Bicantitruncated 7-orthoplex	Cantellated 7-cube	Bicantellated 7-cube
Tricantellated 7-cube	Cantitruncated 7-cube	Bicantitruncated 7-cube	Tricantitruncated 7-cube
Orthogonal projections in BC6 Coxeter plane

In seven-dimensional geometry, a cantellated 7-orthoplex is a convex uniform 7-polytope, being a cantellation of the regular 7-orthoplex.

There are ten degrees of cantellation for the 7-orthoplex, including truncations. Six are most simply constructible from the dual 7-cube.

Contents 1 Cantellated 7-orthoplex 1.1 Alternate names 1.2 Images 2 Bicantellated 7-orthoplex 2.1 Alternate names 2.2 Images 3 Cantitruncated 7-orthoplex 3.1 Alternate names 3.2 Images 4 Bicantitruncated 7-orthoplex 4.1 Alternate names 4.2 Images 5 Related polytopes 6 See also 7 Notes 8 References 9 External links

Cantellated 7-orthoplex

Cantellated 7-orthoplex
Type	uniform polyexon
Schläfli symbol	t0,2{3,3,3,3,3,4}
Coxeter-Dynkin diagram
6-faces
5-faces
4-faces
Cells
Faces
Edges	7560
Vertices	840
Vertex figure
Coxeter groups	BC7, [4,3,3,3,3,3]
Properties	convex

Alternate names

• Small rhombated hecatonicosoctaexon (acronym: sarz) (Jonathan Bowers)^[1]

Images

orthographic projections

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]

Bicantellated 7-orthoplex

Bicantellated 7-orthoplex
Type	uniform polyexon
Schläfli symbol	t1,3{3,3,3,3,3,4}
Coxeter-Dynkin diagrams
6-faces
5-faces
4-faces
Cells
Faces
Edges
Vertices
Vertex figure
Coxeter groups	BC7, [4,3,3,3,3,3]
Properties	convex

Alternate names

• Small birhombated hecatonicosoctaexon (acronym: sebraz) (Jonathan Bowers)^[2]

Images

orthographic projections

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]

Cantitruncated 7-orthoplex

Cantitruncated 7-orthoplex
Type	uniform polyexon
Schläfli symbol	t0,1,2{3,3,3,3,3,4}
Coxeter-Dynkin diagrams
6-faces
5-faces
4-faces
Cells
Faces
Edges	8400
Vertices	1680
Vertex figure
Coxeter groups	BC7, [4,3,3,3,3,3]
Properties	convex

Alternate names

• Great rhombated hecatonicosoctaexon (acronym: garz) (Jonathan Bowers)^[3]

Images

orthographic projections

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]

Bicantitruncated 7-orthoplex

Bicantitruncated 7-orthoplex
Type	uniform polyexon
Schläfli symbol	t1,2,3{3,3,3,3,3,4}
Coxeter-Dynkin diagrams
6-faces
5-faces
4-faces
Cells
Faces
Edges	30240
Vertices	6720
Vertex figure
Coxeter groups	BC7, [4,3,3,3,3,3]
Properties	convex

Alternate names

• Great birhombated hecatonicosoctaexon (acronym: gebraz) (Jonathan Bowers)^[4]

Images

orthographic projections

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]

Related polytopes

These polytopes are from a family of 127 uniform 7-polytopes with BC₇ symmetry.

See also

• List of B7 polytopes

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, editied by F. Arthur Sherk, Peter McMullen, Anthony C. Thompson, Asia Ivic Weiss, Wiley-Interscience Publication, 1995, ISBN 978-0-471-01003-6 [1]
    • (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. 1966
• Richard Klitzing, 7D, uniform polytopes (polyexa) - o3o3o3o3x3o4x - sarz, o3o3o3x3o3x4o - sebraz, o3o3o3o3x3x4x - garz, o3o3o3x3x3x4o - gebraz

External links

• Olshevsky, George, Cross polytope at Glossary for Hyperspace.
• Polytopes of Various Dimensions
• Multi-dimensional Glossary

Family	An	BCn	Dn	E6 / E7 / E8 / F4 / G2	Hn
Regular polygon	Triangle	Square		Hexagon	Pentagon
Uniform polyhedron	Tetrahedron	Octahedron • Cube	Demicube		Dodecahedron • Icosahedron
Uniform polychoron	5-cell	16-cell • Tesseract	Demitesseract	24-cell	120-cell • 600-cell
Uniform 5-polytope	5-simplex	5-orthoplex • 5-cube	5-demicube
Uniform 6-polytope	6-simplex	6-orthoplex • 6-cube	6-demicube	122 • 221
Uniform 7-polytope	7-simplex	7-orthoplex • 7-cube	7-demicube	132 • 231 • 321
Uniform 8-polytope	8-simplex	8-orthoplex • 8-cube	8-demicube	142 • 241 • 421
Uniform 9-polytope	9-simplex	9-orthoplex • 9-cube	9-demicube
Uniform 10-polytope	10-simplex	10-orthoplex • 10-cube	10-demicube
n-polytopes	n-simplex	n-orthoplex • n-cube	n-demicube	1k2 • 2k1 • k21	pentagonal polytope
Topics: Polytope families • Regular polytope • List of regular polytopes