Truncated 5-demicube
Cantic 5-cube

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
( )v{ }×{3}
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

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The Cartesian coordinates for the 160 vertices of a cantic 5-cube centered at the origin and edge length 62 are coordinate permutations:

(±1,±1,±3,±3,±3)

with an odd number of plus signs.

Alternate names

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  • Cantic penteract, truncated demipenteract
  • Truncated hemipenteract (thin) (Jonathan Bowers)[1]

Images

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orthographic projections
Coxeter plane B5
Graph  
Dihedral symmetry [10/2]
Coxeter plane D5 D4
Graph    
Dihedral symmetry [8] [6]
Coxeter plane D3 A3
Graph    
Dihedral symmetry [4] [4]
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It has half the vertices of the cantellated 5-cube, as compared here in the B5 Coxeter plane projections:

 
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
           
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.

D5 polytopes
 
h{4,3,3,3}
 
h2{4,3,3,3}
 
h3{4,3,3,3}
 
h4{4,3,3,3}
 
h2,3{4,3,3,3}
 
h2,4{4,3,3,3}
 
h3,4{4,3,3,3}
 
h2,3,4{4,3,3,3}

Notes

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  1. ^ Klitzing, (x3x3o *b3o3o - thin)

References

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  • 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.
  • Klitzing, Richard. "5D uniform polytopes (polytera) x3x3o *b3o3o - thin".
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Family An Bn I2(p) / Dn E6 / E7 / E8 / F4 / G2 Hn
Regular polygon Triangle Square p-gon Hexagon Pentagon
Uniform polyhedron Tetrahedron OctahedronCube Demicube DodecahedronIcosahedron
Uniform polychoron Pentachoron 16-cellTesseract Demitesseract 24-cell 120-cell600-cell
Uniform 5-polytope 5-simplex 5-orthoplex5-cube 5-demicube
Uniform 6-polytope 6-simplex 6-orthoplex6-cube 6-demicube 122221
Uniform 7-polytope 7-simplex 7-orthoplex7-cube 7-demicube 132231321
Uniform 8-polytope 8-simplex 8-orthoplex8-cube 8-demicube 142241421
Uniform 9-polytope 9-simplex 9-orthoplex9-cube 9-demicube
Uniform 10-polytope 10-simplex 10-orthoplex10-cube 10-demicube
Uniform n-polytope n-simplex n-orthoplexn-cube n-demicube 1k22k1k21 n-pentagonal polytope
Topics: Polytope familiesRegular polytopeList of regular polytopes and compounds