Rectified 120-cell
120-cell | Rectified 120-cell | ||
600-cell | Rectified 600-cell | ||
Orthogonal projections in H3 Coxeter plane |
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In geometry, a rectified 120-cell is a uniform 4-polytope formed as the rectification of the regular 120-cell.
E. L. Elte identified it in 1912 as a semiregular polytope, labeling it as tC120.
There are four rectifications of the 120-cell, including the zeroth, the 120-cell itself. The birectified 120-cell is more easily seen as a rectified 600-cell, and the trirectified 120-cell is the same as the dual 600-cell.
Rectified 120-cell
[edit]Rectified 120-cell | |
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Schlegel diagram, centered on icosidodecahedon, tetrahedral cells visible | |
Type | Uniform 4-polytope |
Uniform index | 33 |
Coxeter diagram | |
Schläfli symbol | t1{5,3,3} or r{5,3,3} |
Cells | 720 total: 120 (3.5.3.5) 600 (3.3.3) |
Faces | 3120 total: 2400 {3}, 720 {5} |
Edges | 3600 |
Vertices | 1200 |
Vertex figure | triangular prism |
Symmetry group | H4 or [3,3,5] |
Properties | convex, vertex-transitive, edge-transitive |
In geometry, the rectified 120-cell or rectified hecatonicosachoron is a convex uniform 4-polytope composed of 600 regular tetrahedra and 120 icosidodecahedra cells. Its vertex figure is a triangular prism, with three icosidodecahedra and two tetrahedra meeting at each vertex.
Alternative names:
- Rectified 120-cell (Norman Johnson)
- Rectified hecatonicosichoron / rectified dodecacontachoron / rectified polydodecahedron
- Icosidodecahedral hexacosihecatonicosachoron
- Rahi (Jonathan Bowers: for rectified hecatonicosachoron)
- Ambohecatonicosachoron (Neil Sloane & John Horton Conway)
Projections
[edit]H4 | - | F4 |
---|---|---|
[30] | [20] | [12] |
H3 | A2 / B3 / D4 | A3 / B2 |
[10] | [6] | [4] |
Related polytopes
[edit]H4 family polytopes | |||||||||||
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120-cell | rectified 120-cell | truncated 120-cell | cantellated 120-cell | runcinated 120-cell | cantitruncated 120-cell | runcitruncated 120-cell | omnitruncated 120-cell | ||||
{5,3,3} | r{5,3,3} | t{5,3,3} | rr{5,3,3} | t0,3{5,3,3} | tr{5,3,3} | t0,1,3{5,3,3} | t0,1,2,3{5,3,3} | ||||
600-cell | rectified 600-cell | truncated 600-cell | cantellated 600-cell | bitruncated 600-cell | cantitruncated 600-cell | runcitruncated 600-cell | omnitruncated 600-cell | ||||
{3,3,5} | r{3,3,5} | t{3,3,5} | rr{3,3,5} | 2t{3,3,5} | tr{3,3,5} | t0,1,3{3,3,5} | t0,1,2,3{3,3,5} |
Notes
[edit]References
[edit]- 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]
- J.H. Conway and M.J.T. Guy: Four-Dimensional Archimedean Polytopes, Proceedings of the Colloquium on Convexity at Copenhagen, page 38 und 39, 1965
- N.W. Johnson: The Theory of Uniform Polytopes and Honeycombs, Ph.D. Dissertation, University of Toronto, 1966
External links
[edit]- Convex uniform polychora based on the hecatonicosachoron (120-cell) and hexacosichoron (600-cell) - Model 33, George Olshevsky.
- rectified 120-cell Marco Möller's Archimedean polytopes in R4 (German)
- Klitzing, Richard. "4D uniform polytopes (polychora) o3o3x5o - rahi".
- (in German) Four-dimensional Archimedean Polytopes, Marco Möller, 2004 PhD dissertation [2]
- H4 uniform polytopes with coordinates: r{5,3,3}