Cantellated 5-simplexes
In five-dimensional geometry, a cantellated 5-simplex is a convex uniform 5-polytope, being a cantellation of the regular 5-simplex.
There are unique 4 degrees of cantellation for the 5-simplex, including truncations.
Cantellated 5-simplex
[edit | edit source]The cantellated 5-simplex has 60 vertices, 240 edges, 290 faces (200 triangles and 90 squares), 135 cells (30 tetrahedra, 30 octahedra, 15 cuboctahedra and 60 triangular prisms), and 27 4-faces (6 cantellated 5-cell, 6 rectified 5-cells, and 15 tetrahedral prisms).
Alternate names
[edit | edit source]- Cantellated hexateron
- Small rhombated hexateron (Acronym: sarx) (Jonathan Bowers)[1]
Coordinates
[edit | edit source]The vertices of the cantellated 5-simplex can be most simply constructed on a hyperplane in 6-space as permutations of (0,0,0,1,1,2) or of (0,1,1,2,2,2). These represent positive orthant facets of the cantellated hexacross and bicantellated hexeract respectively.
Images
[edit | edit source]| Ak Coxeter plane |
A5 | A4 |
|---|---|---|
| Graph | File:5-simplex t02.svg | File:5-simplex t02 A4.svg |
| Dihedral symmetry | [6] | [5] |
| Ak Coxeter plane |
A3 | A2 |
| Graph | File:5-simplex t02 A3.svg | File:5-simplex t02 A2.svg |
| Dihedral symmetry | [4] | [3] |
Bicantellated 5-simplex
[edit | edit source]| Bicantellated 5-simplex | ||
| Type | Uniform 5-polytope | |
| Schläfli symbol | 2rr{3,3,3,3} = | |
| Coxeter-Dynkin diagram | File:CDel node.pngFile:CDel 3.pngFile:CDel node 1.pngFile:CDel 3.pngFile:CDel node.pngFile:CDel 3.pngFile:CDel node 1.pngFile:CDel 3.pngFile:CDel node.png or File:CDel node.pngFile:CDel split1.pngFile:CDel nodes 11.pngFile:CDel 3ab.pngFile:CDel nodes.png | |
| 4-faces | 32 | 12 t02{3,3,3} 20 {3}x{3} |
| Cells | 180 | 30 t1{3,3} 120 {}x{3} 30 t02{3,3} |
| Faces | 420 | 240 {3} 180 {4} |
| Edges | 360 | |
| Vertices | 90 | |
| Vertex figure | File:Bicantellated 5-simplex verf.png | |
| Coxeter group | A5×2, [[3,3,3,3]], order 1440 | |
| Properties | convex, isogonal | |
Alternate names
[edit | edit source]- Bicantellated hexateron
- Small birhombated dodecateron (Acronym: sibrid) (Jonathan Bowers)[2]
Coordinates
[edit | edit source]The coordinates can be made in 6-space, as 90 permutations of:
- (0,0,1,1,2,2)
This construction exists as one of 64 orthant facets of the bicantellated 6-orthoplex.
Images
[edit | edit source]| Ak Coxeter plane |
A5 | A4 |
|---|---|---|
| Graph | File:5-simplex t13.svg | File:5-simplex t13 A4.svg |
| Dihedral symmetry | [6] | [[5]]=[10] |
| Ak Coxeter plane |
A3 | A2 |
| Graph | File:5-simplex t13 A3.svg | File:5-simplex t13 A2.svg |
| Dihedral symmetry | [4] | [[3]]=[6] |
Cantitruncated 5-simplex
[edit | edit source]| cantitruncated 5-simplex | ||
| Type | Uniform 5-polytope | |
| Schläfli symbol | tr{3,3,3,3} = | |
| Coxeter-Dynkin diagram | File:CDel node 1.pngFile:CDel 3.pngFile:CDel node 1.pngFile:CDel 3.pngFile:CDel node 1.pngFile:CDel 3.pngFile:CDel node.pngFile:CDel 3.pngFile:CDel node.png or File:CDel node 1.pngFile:CDel split1.pngFile:CDel nodes 11.pngFile:CDel 3a.pngFile:CDel nodea.pngFile:CDel 3a.pngFile:CDel nodea.png | |
| 4-faces | 27 | 6 t012{3,3,3}File:4-simplex t012.svg 6 t{3,3,3}File:4-simplex t01.svg 15 {}x{3,3} |
| Cells | 135 | 15 t012{3,3} File:3-simplex t012.svg 30 t{3,3}File:3-simplex t01.svg 60 {}x{3} 30 {3,3}File:3-simplex t0.svg |
| Faces | 290 | 120 {3}File:2-simplex t0.svg 80 {6}File:2-simplex t01.svg 90 {}x{}File:2-cube.svg |
| Edges | 300 | |
| Vertices | 120 | |
| Vertex figure | File:Canitruncated 5-simplex verf.png Irr. 5-cell | |
| Coxeter group | A5 [3,3,3,3], order 720 | |
| Properties | convex | |
Alternate names
[edit | edit source]- Cantitruncated hexateron
- Great rhombated hexateron (Acronym: garx) (Jonathan Bowers)[3]
Coordinates
[edit | edit source]The vertices of the cantitruncated 5-simplex can be most simply constructed on a hyperplane in 6-space as permutations of (0,0,0,1,2,3) or of (0,1,2,3,3,3). These construction can be seen as facets of the cantitruncated 6-orthoplex or bicantitruncated 6-cube respectively.
Images
[edit | edit source]| Ak Coxeter plane |
A5 | A4 |
|---|---|---|
| Graph | File:5-simplex t012.svg | File:5-simplex t012 A4.svg |
| Dihedral symmetry | [6] | [5] |
| Ak Coxeter plane |
A3 | A2 |
| Graph | File:5-simplex t012 A3.svg | File:5-simplex t012 A2.svg |
| Dihedral symmetry | [4] | [3] |
Bicantitruncated 5-simplex
[edit | edit source]| Bicantitruncated 5-simplex | ||
| Type | Uniform 5-polytope | |
| Schläfli symbol | 2tr{3,3,3,3} = | |
| Coxeter-Dynkin diagram | File:CDel node.pngFile:CDel 3.pngFile:CDel node 1.pngFile:CDel 3.pngFile:CDel node 1.pngFile:CDel 3.pngFile:CDel node 1.pngFile:CDel 3.pngFile:CDel node.png or File:CDel node 1.pngFile:CDel split1.pngFile:CDel nodes 11.pngFile:CDel 3ab.pngFile:CDel nodes.png | |
| 4-faces | 32 | 12 tr{3,3,3} 20 {3}x{3} |
| Cells | 180 | 30 t{3,3} 120 {}x{3} 30 t{3,4} |
| Faces | 420 | 240 {3} 180 {4} |
| Edges | 450 | |
| Vertices | 180 | |
| Vertex figure | File:Bicanitruncated 5-simplex verf.png | |
| Coxeter group | A5×2, [[3,3,3,3]], order 1440 | |
| Properties | convex, isogonal | |
Alternate names
[edit | edit source]- Bicantitruncated hexateron
- Great birhombated dodecateron(Acronym: gibrid) (Jonathan Bowers)[4]
Coordinates
[edit | edit source]The coordinates can be made in 6-space, as 180 permutations of:
- (0,0,1,2,3,3)
This construction exists as one of 64 orthant facets of the bicantitruncated 6-orthoplex.
Images
[edit | edit source]| Ak Coxeter plane |
A5 | A4 |
|---|---|---|
| Graph | File:5-simplex t123.svg | File:5-simplex t123 A4.svg |
| Dihedral symmetry | [6] | [[5]]=[10] |
| Ak Coxeter plane |
A3 | A2 |
| Graph | File:5-simplex t123 A3.svg | File:5-simplex t123 A2.svg |
| Dihedral symmetry | [4] | [[3]]=[6] |
Related uniform 5-polytopes
[edit | edit source]The cantellated 5-simplex is one of 19 uniform 5-polytopes based on the [3,3,3,3] Coxeter group, all shown here in A5 Coxeter plane orthographic projections. (Vertices are colored by projection overlap order, red, orange, yellow, green, cyan, blue, purple having progressively more vertices)
Notes
[edit | edit source]References
[edit | edit source]- 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, Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). [1] Archived 2016-07-11 at the Wayback Machine
- (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.
- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). x3o3x3o3o - sarx, o3x3o3x3o - sibrid, x3x3x3o3o - garx, o3x3x3x3o - gibrid
External links
[edit | edit source]- Glossary for hyperspace, George Olshevsky.
- Polytopes of Various Dimensions, Jonathan Bowers
- Multi-dimensional Glossary