Cantic 5-cube

Truncated 5-demicube Cantic 5-cube
280px D5 Coxeter plane projection
Type	uniform 5-polytope
Schläfli symbol	h2{4,3,3,3} t{3,32,1}
Coxeter-Dynkin diagram	=
4-faces	42 total: 16 r{3,3,3} 16 t{3,3,3} 10 t{3,3,4}
Cells	280 total: 80 {3,3} 120 t{3,3} 80 {3,4}
Faces	640 total: 480 {3} 160 {6}
Edges	560
Vertices	160
Vertex figure	Triangular prism pyramid
Coxeter groups	D5, [32,1,1]
Properties	convex

In geometry of five dimensions or higher, a cantic 5-cube, cantihalf 5-cube, truncated 5-demicube is a uniform 5-polytope, being a truncation of the 5-demicube. It has half the vertices of a cantellated 5-cube.

Cartesian coordinates

The Cartesian coordinates for the 160 vertices of a cantic 5-cube centered at the origin and edge length 6√2 are coordinate permutations:

(±1,±1,±3,±3,±3)

with an odd number of plus signs.

Alternate names

• Cantic penteract, truncated demipenteract
• Truncated hemipenteract (thin) (Jonathan Bowers)

Images

orthographic projections

Coxeter plane	B5
Graph	200px
Dihedral symmetry	[10/2]
Coxeter plane	D5	D4
Graph		200px
Dihedral symmetry	[8]	[6]
Coxeter plane	D3	A3
Graph	200px	200px
Dihedral symmetry	[4]	[4]

Related polytopes

It has half the vertices of the cantellated 5-cube, as compared here in the B5 Coxeter plane projections:

240px Cantic 5-cube

Cantellated 5-cube

This polytope is based on the 5-demicube, a part of a dimensional family of uniform polytopes called demihypercubes for being alternation of the hypercube family.

Dimensional family of cantic n-cubes

n	3	4	5	6	7	8
Symmetry [1+,4,3n-2]	[1+,4,3] = [3,3]	[1+,4,32] = [3,31,1]	[1+,4,33] = [3,32,1]	[1+,4,34] = [3,33,1]	[1+,4,35] = [3,34,1]	[1+,4,36] = [3,35,1]
Cantic figure	80px		80px	80px	80px	80px
Coxeter	=	=	=	=	=	=
Schläfli	h2{4,3}	h2{4,32}	h2{4,33}	h2{4,34}	h2{4,35}	h2{4,36}

There are 23 uniform 5-polytope that can be constructed from the D₅ symmetry of the 5-demicube, of which are unique to this family, and 15 are shared within the 5-cube family.

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.
• Richard Klitzing, 5D uniform polytopes (polytera), x3x3o *b3o3o - thin

External links

• Weisstein, Eric W., "Hypercube", MathWorld.
• Olshevsky, George, Measure polytope at Glossary for Hyperspace.
• Polytopes of Various Dimensions
• Multi-dimensional Glossary