B6 polytope

Last updated March 12, 2019

Orthographic projections in the B₆ Coxeter plane
6-cube	6-orthoplex	6-demicube

In 6-dimensional geometry, there are 64 uniform polytopes with B₆ symmetry. There are two regular forms, the 6-orthoplex, and 6-cube with 12 and 64 vertices respectively. The 6-demicube is added with half the symmetry.

Geometry is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space. A mathematician who works in the field of geometry is called a geometer.

In six-dimensional geometry, a uniform polypeton is a six-dimensional uniform polytope. A uniform polypeton is vertex-transitive, and all facets are uniform 5-polytopes.

In geometry, a 6-orthoplex, or 6-cross polytope, is a regular 6-polytope with 12 vertices, 60 edges, 160 triangle faces, 240 tetrahedron cells, 192 5-cell 4-faces, and 64 5-faces.

Orthographic projection is a means of representing three-dimensional objects in two dimensions. It is a form of parallel projection, in which all the projection lines are orthogonal to the projection plane, resulting in every plane of the scene appearing in affine transformation on the viewing surface. The obverse of an orthographic projection is an oblique projection, which is a parallel projection in which the projection lines are not orthogonal to the projection plane.

Graphs

Symmetric orthographic projections of these 64 polytopes can be made in the B₆, B₅, B₄, B₃, B₂, A₅, A₃, Coxeter planes. A_k has [k+1] symmetry, and B_k has [2k] symmetry.

These 64 polytopes are each shown in these 8 symmetry planes, with vertices and edges drawn, and vertices colored by the number of overlapping vertices in each projective position.

#	Coxeter plane graphs							Coxeter-Dynkin diagram Schläfli symbol Names
#	B₆ [12]	B₅ / D₄ / A₄ [10]	B₄ [8]	B₃ / A₂ [6]	B₂ [4]	A₅ [6]	A₃ [4]	Coxeter-Dynkin diagram Schläfli symbol Names
1								{3,3,3,3,4} 6-orthoplex Hexacontatetrapeton (gee)
2								t₁{3,3,3,3,4} Rectified 6-orthoplex Rectified hexacontatetrapeton (rag)
3								t₂{3,3,3,3,4} Birectified 6-orthoplex Birectified hexacontatetrapeton (brag)
4								t₂{4,3,3,3,3} Birectified 6-cube Birectified hexeract (brox)
5								t₁{4,3,3,3,3} Rectified 6-cube Rectified hexeract (rax)
6								{4,3,3,3,3} 6-cube Hexeract (ax)
64								h{4,3,3,3,3} 6-demicube Hemihexeract
7								t_0,1{3,3,3,3,4} Truncated 6-orthoplex Truncated hexacontatetrapeton (tag)
8								t_0,2{3,3,3,3,4} Cantellated 6-orthoplex Small rhombated hexacontatetrapeton (srog)
9								t_1,2{3,3,3,3,4} Bitruncated 6-orthoplex Bitruncated hexacontatetrapeton (botag)
10								t_0,3{3,3,3,3,4} Runcinated 6-orthoplex Small prismated hexacontatetrapeton (spog)
11								t_1,3{3,3,3,3,4} Bicantellated 6-orthoplex Small birhombated hexacontatetrapeton (siborg)
12								t_2,3{4,3,3,3,3} Tritruncated 6-cube Hexeractihexacontitetrapeton (xog)
13								t_0,4{3,3,3,3,4} Stericated 6-orthoplex Small cellated hexacontatetrapeton (scag)
14								t_1,4{4,3,3,3,3} Biruncinated 6-cube Small biprismato-hexeractihexacontitetrapeton (sobpoxog)
15								t_1,3{4,3,3,3,3} Bicantellated 6-cube Small birhombated hexeract (saborx)
16								t_1,2{4,3,3,3,3} Bitruncated 6-cube Bitruncated hexeract (botox)
17								t_0,5{4,3,3,3,3} Pentellated 6-cube Small teri-hexeractihexacontitetrapeton (stoxog)
18								t_0,4{4,3,3,3,3} Stericated 6-cube Small cellated hexeract (scox)
19								t_0,3{4,3,3,3,3} Runcinated 6-cube Small prismated hexeract (spox)
20								t_0,2{4,3,3,3,3} Cantellated 6-cube Small rhombated hexeract (srox)
21								t_0,1{4,3,3,3,3} Truncated 6-cube Truncated hexeract (tox)
22								t_0,1,2{3,3,3,3,4} Cantitruncated 6-orthoplex Great rhombated hexacontatetrapeton (grog)
23								t_0,1,3{3,3,3,3,4} Runcitruncated 6-orthoplex Prismatotruncated hexacontatetrapeton (potag)
24								t_0,2,3{3,3,3,3,4} Runcicantellated 6-orthoplex Prismatorhombated hexacontatetrapeton (prog)
25								t_1,2,3{3,3,3,3,4} Bicantitruncated 6-orthoplex Great birhombated hexacontatetrapeton (gaborg)
26								t_0,1,4{3,3,3,3,4} Steritruncated 6-orthoplex Cellitruncated hexacontatetrapeton (catog)
27								t_0,2,4{3,3,3,3,4} Stericantellated 6-orthoplex Cellirhombated hexacontatetrapeton (crag)
28								t_1,2,4{3,3,3,3,4} Biruncitruncated 6-orthoplex Biprismatotruncated hexacontatetrapeton (boprax)
29								t_0,3,4{3,3,3,3,4} Steriruncinated 6-orthoplex Celliprismated hexacontatetrapeton (copog)
30								t_1,2,4{4,3,3,3,3} Biruncitruncated 6-cube Biprismatotruncated hexeract (boprag)
31								t_1,2,3{4,3,3,3,3} Bicantitruncated 6-cube Great birhombated hexeract (gaborx)
32								t_0,1,5{3,3,3,3,4} Pentitruncated 6-orthoplex Teritruncated hexacontatetrapeton (tacox)
33								t_0,2,5{3,3,3,3,4} Penticantellated 6-orthoplex Terirhombated hexacontatetrapeton (tapox)
34								t_0,3,4{4,3,3,3,3} Steriruncinated 6-cube Celliprismated hexeract (copox)
35								t_0,2,5{4,3,3,3,3} Penticantellated 6-cube Terirhombated hexeract (topag)
36								t_0,2,4{4,3,3,3,3} Stericantellated 6-cube Cellirhombated hexeract (crax)
37								t_0,2,3{4,3,3,3,3} Runcicantellated 6-cube Prismatorhombated hexeract (prox)
38								t_0,1,5{4,3,3,3,3} Pentitruncated 6-cube Teritruncated hexeract (tacog)
39								t_0,1,4{4,3,3,3,3} Steritruncated 6-cube Cellitruncated hexeract (catax)
40								t_0,1,3{4,3,3,3,3} Runcitruncated 6-cube Prismatotruncated hexeract (potax)
41								t_0,1,2{4,3,3,3,3} Cantitruncated 6-cube Great rhombated hexeract (grox)
42								t_0,1,2,3{3,3,3,3,4} Runcicantitruncated 6-orthoplex Great prismated hexacontatetrapeton (gopog)
43								t_0,1,2,4{3,3,3,3,4} Stericantitruncated 6-orthoplex Celligreatorhombated hexacontatetrapeton (cagorg)
44								t_0,1,3,4{3,3,3,3,4} Steriruncitruncated 6-orthoplex Celliprismatotruncated hexacontatetrapeton (captog)
45								t_0,2,3,4{3,3,3,3,4} Steriruncicantellated 6-orthoplex Celliprismatorhombated hexacontatetrapeton (coprag)
46								t_1,2,3,4{4,3,3,3,3} Biruncicantitruncated 6-cube Great biprismato-hexeractihexacontitetrapeton (gobpoxog)
47								t_0,1,2,5{3,3,3,3,4} Penticantitruncated 6-orthoplex Terigreatorhombated hexacontatetrapeton (togrig)
48								t_0,1,3,5{3,3,3,3,4} Pentiruncitruncated 6-orthoplex Teriprismatotruncated hexacontatetrapeton (tocrax)
49								t_0,2,3,5{4,3,3,3,3} Pentiruncicantellated 6-cube Teriprismatorhombi-hexeractihexacontitetrapeton (tiprixog)
50								t_0,2,3,4{4,3,3,3,3} Steriruncicantellated 6-cube Celliprismatorhombated hexeract (coprix)
51								t_0,1,4,5{4,3,3,3,3} Pentisteritruncated 6-cube Tericelli-hexeractihexacontitetrapeton (tactaxog)
52								t_0,1,3,5{4,3,3,3,3} Pentiruncitruncated 6-cube Teriprismatotruncated hexeract (tocrag)
53								t_0,1,3,4{4,3,3,3,3} Steriruncitruncated 6-cube Celliprismatotruncated hexeract (captix)
54								t_0,1,2,5{4,3,3,3,3} Penticantitruncated 6-cube Terigreatorhombated hexeract (togrix)
55								t_0,1,2,4{4,3,3,3,3} Stericantitruncated 6-cube Celligreatorhombated hexeract (cagorx)
56								t_0,1,2,3{4,3,3,3,3} Runcicantitruncated 6-cube Great prismated hexeract (gippox)
57								t_0,1,2,3,4{3,3,3,3,4} Steriruncicantitruncated 6-orthoplex Great cellated hexacontatetrapeton (gocog)
58								t_0,1,2,3,5{3,3,3,3,4} Pentiruncicantitruncated 6-orthoplex Terigreatoprismated hexacontatetrapeton (tagpog)
59								t_0,1,2,4,5{3,3,3,3,4} Pentistericantitruncated 6-orthoplex Tericelligreatorhombated hexacontatetrapeton (tecagorg)
60								t_0,1,2,4,5{4,3,3,3,3} Pentistericantitruncated 6-cube Tericelligreatorhombated hexeract (tocagrax)
61								t_0,1,2,3,5{4,3,3,3,3} Pentiruncicantitruncated 6-cube Terigreatoprismated hexeract (tagpox)
62								t_0,1,2,3,4{4,3,3,3,3} Steriruncicantitruncated 6-cube Great cellated hexeract (gocax)
63								t_0,1,2,3,4,5{4,3,3,3,3} Omnitruncated 6-cube Great teri-hexeractihexacontitetrapeton (gotaxog)

Related Research Articles

In 8-dimensional geometry, there are 255 uniform polytopes with E₈ symmetry. The three simplest forms are the 4₂₁, 2₄₁, and 1₄₂ polytopes, composed of 240, 2160 and 17280 vertices respectively.

In 7-dimensional geometry, there are 127 uniform polytopes with E₇ symmetry. The three simplest forms are the 3₂₁, 2₃₁, and 1₃₂ polytopes, composed of 56, 126, and 576 vertices respectively.

In 6-dimensional geometry, there are 39 uniform polytopes with E₆ symmetry. The two simplest forms are the 2₂₁ and 1₂₂ polytopes, composed of 27 and 72 vertices respectively.

In six-dimensional geometry, a truncated 6-simplex is a convex uniform 6-polytope, being a truncation of the regular 6-simplex.

In eight-dimensional geometry, a pentellated 8-simplex is a convex uniform 8-polytope with 5th order truncations of the regular 8-simplex.

In 8-dimensional geometry, there are 135 uniform polytopes with A₈ symmetry. There is one self-dual regular form, the 8-simplex with 9 vertices.

In 7-dimensional geometry, there are 128 uniform polytopes with B₇ symmetry. There are two regular forms, the 7-orthoplex, and 8-cube with 14 and 128 vertices respectively. The 7-demicube is added with half of the symmetry.

In 7-dimensional geometry, there are 71 uniform polytopes with A₇ symmetry. There is one self-dual regular form, the 7-simplex with 8 vertices.

In 6-dimensional geometry, there are 35 uniform polytopes with A₆ symmetry. There is one self-dual regular form, the 6-simplex with 7 vertices.

In 6-dimensional geometry, there are 47 uniform polytopes with D₆ symmetry, 16 are unique, and 31 are shared with the B₆ symmetry. There are two regular forms, the 6-orthoplex, and 6-demicube with 12 and 32 vertices respectively.

In 7-dimensional geometry, there are 95 uniform polytopes with D₇ symmetry; 32 are unique, and 63 are shared with the B₇ symmetry. There are two regular forms, the 7-orthoplex, and 7-demicube with 14 and 64 vertices respectively.

In 5-dimensional geometry, there are 19 uniform polytopes with A₅ symmetry. There is one self-dual regular form, the 5-simplex with 6 vertices.

In 5-dimensional geometry, there are 31 uniform polytopes with B₅ symmetry. There are two regular forms, the 5-orthoplex, and 5-cube with 10 and 32 vertices respectively. The 5-demicube is added as an alternation of the 5-cube.

In 5-dimensional geometry, there are 23 uniform polytopes with D₅ symmetry, 8 are unique, and 15 are shared with the B₅ symmetry. There are two special forms, the 5-orthoplex, and 5-demicube with 10 and 16 vertices respectively.

In six-dimensional geometry, a runcic 5-cube or is a convex uniform 5-polytope. There are 2 runcic forms for the 5-cube. Runcic 5-cubes have half the vertices of runcinated 5-cubes.

In seven-dimensional geometry, a cantic 7-cube or truncated 7-demicube as a uniform 7-polytope, being a truncation of the 7-demicube.

In 4-dimensional geometry, there are 9 uniform polytopes with A₄ symmetry. There is one self-dual regular form, the 5-cell with 5 vertices.

In 4-dimensional geometry, there are 15 uniform 4-polytopes with B₄ symmetry. There are two regular forms, the tesseract, and 16-cell with 16 and 8 vertices respectively.

In 4-dimensional geometry, there are 7 uniform 4-polytopes with reflections of D₄ symmetry, all are shared with higher symmetry constructions in the B₄ or F₄ symmetry families. there is also one half symmetry alternation, the snub 24-cell.

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]
N.W. Johnson: The Theory of Uniform Polytopes and Honeycombs, Ph.D. Dissertation, University of Toronto, 1966
Klitzing, Richard. "6D uniform polytopes (polypeta)".

Harold Scott MacDonald Coxeter Canadian mathematician

Harold Scott MacDonald "Donald" Coxeter, FRS, FRSC, was a British-born Canadian geometer. Coxeter is regarded as one of the greatest geometers of the 20th century. He was born in London, received his BA (1929) and PhD (1931) from Cambridge, but lived in Canada from age 29. He was always called Donald, from his third name MacDonald. He was most noted for his work on regular polytopes and higher-dimensional geometries. He was a champion of the classical approach to geometry, in a period when the tendency was to approach geometry more and more via algebra.

International Standard Book Number Unique numeric book identifier

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Notes

↑ Wiley::Kaleidoscopes: Selected Writings of H.S.M. Coxeter

v t e Fundamental convex regular and uniform polytopes in dimensions 2–10
Family	A_n	B_n	I₂(p) / D_n	E₆ / E₇ / E₈ / F₄ / G₂	H_n
Regular polygon	Triangle	Square	p-gon	Hexagon	Pentagon
Uniform polyhedron	Tetrahedron	Octahedron • Cube	Demicube		Dodecahedron • Icosahedron
Uniform 4-polytope	5-cell	16-cell • Tesseract	Demitesseract	24-cell	120-cell • 600-cell
Uniform 5-polytope	5-simplex	5-orthoplex • 5-cube	5-demicube
Uniform 6-polytope	6-simplex	6-orthoplex • 6-cube	6-demicube	1₂₂ • 2₂₁
Uniform 7-polytope	7-simplex	7-orthoplex • 7-cube	7-demicube	1₃₂ • 2₃₁ • 3₂₁
Uniform 8-polytope	8-simplex	8-orthoplex • 8-cube	8-demicube	1₄₂ • 2₄₁ • 4₂₁
Uniform 9-polytope	9-simplex	9-orthoplex • 9-cube	9-demicube
Uniform 10-polytope	10-simplex	10-orthoplex • 10-cube	10-demicube
Uniform n-polytope	n-simplex	n-orthoplex • n-cube	n-demicube	1_k2 • 2_k1 • k₂₁	n-pentagonal polytope
Topics: Polytope families • Regular polytope • List of regular polytopes and compounds

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[1] Wiley::Kaleidoscopes: Selected Writings of H.S.M. Coxeter

B6 polytope

Contents

Graphs

Related Research Articles

References

Notes