Runcinated 7-cubes

7-cube	Runcinated 7-cube	Biruncinated 7-cube
Runcitruncated 7-cube	Biruncitruncated 7-cube	Runcicantellated 7-cube
Biruncicantellated 7-cube	Runcicantitruncated 7-cube	Biruncicantitruncated 7-cube
Orthogonal projections in B7 Coxeter plane

In seven-dimensional geometry, a runcinated 7-cube is a convex uniform 7-polytope with 3rd order truncations (runcination) of the regular 7-cube.

There are 16 unique runcinations of the 7-cube with permutations of truncations, and cantellations. 8 are more simply constructed from the 7-orthoplex.

These polytopes are among 127 uniform 7-polytopes with B₇ symmetry.

Runcinated 7-cube

Runcinated 7-cube
Type	uniform 7-polytope
Schläfli symbol	t0,3{4,35}
Coxeter-Dynkin diagrams
6-faces
5-faces
4-faces
Cells
Faces
Edges	33600
Vertices	4480
Vertex figure
Coxeter groups	B7, [4,35]
Properties	convex

Alternate names

• Small prismated hepteract (acronym: spesa) (Jonathan Bowers)

Biruncinated 7-cube

Biruncinated 7-cube
Type	uniform 7-polytope
Schläfli symbol	t1,4{4,35}
Coxeter-Dynkin diagrams
6-faces
5-faces
4-faces
Cells
Faces
Edges	67200
Vertices	8960
Vertex figure
Coxeter groups	B7, [4,35]
Properties	convex

Alternate names

• Small biprismated hepteract (Acronym sibposa) (Jonathan Bowers)

Runcitruncated 7-cube

Runcitruncated 7-cube
Type	uniform 7-polytope
Schläfli symbol	t0,1,3{4,35}
Coxeter-Dynkin diagrams
6-faces
5-faces
4-faces
Cells
Faces
Edges	73920
Vertices	13440
Vertex figure
Coxeter groups	B7, [4,35]
Properties	convex

Alternate names

• Prismatotruncated hepteract (acronym: petsa) (Jonathan Bowers)

Biruncitruncated 7-cube

Biruncitruncated 7-cube
Type	uniform 7-polytope
Schläfli symbol	t1,2,4{4,35}
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

• Biprismatotruncated hepteract (acronym: biptesa) (Jonathan Bowers)

Runcicantellated 7-cube

Runcicantellated 7-cube
Type	uniform 7-polytope
Schläfli symbol	t0,2,3{4,35}
Coxeter-Dynkin diagrams
6-faces
5-faces
4-faces
Cells
Faces
Edges	53760
Vertices	13440
Vertex figure
Coxeter groups	B7, [4,35]
Properties	convex

Alternate names

• Prismatorhombated hepteract (acronym: parsa) (Jonathan Bowers)

Biruncicantellated 7-cube

biruncicantellated 7-cube
Type	uniform 7-polytope
Schläfli symbol	t1,3,4{4,35}
Coxeter-Dynkin diagrams
6-faces
5-faces
4-faces
Cells
Faces
Edges	120960
Vertices	26880
Vertex figure
Coxeter groups	B7, [4,35]
Properties	convex

Alternate names

• Biprismatorhombated hepteract (acronym: bopresa) (Jonathan Bowers)

Runcicantitruncated 7-cube

Runcicantitruncated 7-cube
Type	uniform 7-polytope
Schläfli symbol	t0,1,2,3{4,35}
Coxeter-Dynkin diagrams
6-faces
5-faces
4-faces
Cells
Faces
Edges	94080
Vertices	26880
Vertex figure
Coxeter groups	B7, [4,35]
Properties	convex

Alternate names

• Great prismated hepteract (acronym: gapsa) (Jonathan Bowers)

Biruncicantitruncated 7-cube

biruncicantitruncated 7-cube
Type	uniform 7-polytope
Schläfli symbol	t1,2,3,4{4,35}
Coxeter-Dynkin diagrams
6-faces
5-faces
4-faces
Cells
Faces
Edges	188160
Vertices	53760
Vertex figure
Coxeter groups	B7, [4,35]
Properties	convex

Alternate names

• Great biprismated hepteract (acronym: gibposa) (Jonathan Bowers)

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 [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)
• Klitzing, Richard. "7D uniform polytopes (polyexa)". https://bendwavy.org/klitzing/dimensions/polyexa.htm.  x3o3o3x3o3o4o - spo, o3x3o3o3x3o4o - sibpo, x3x3o3x3o3o4o - patto, o3x3x3o3x3o4o - bipto, x3o3x3x3o3o4o - paro, x3x3x3x3o3o4o - gapo, o3x3x3x3x3o3o- gibpo

External links

• Polytopes of Various Dimensions
• Multi-dimensional Glossary