Hexiruncicantellated_7-simplex

Hexicated 7-simplexes

Hexicated 7-simplexes

Type of 7-polytope


In seven-dimensional geometry, a hexicated 7-simplex is a convex uniform 7-polytope, including 6th-order truncations (hexication) from the regular 7-simplex.

More information Orthogonal projections in A7 Coxeter plane ...

There are 20 unique hexications for the 7-simplex, including all permutations of truncations, cantellations, runcinations, sterications, and pentellations.

The simple hexicated 7-simplex is also called an expanded 7-simplex, with only the first and last nodes ringed, is constructed by an expansion operation applied to the regular 7-simplex. The highest form, the hexipentisteriruncicantitruncated 7-simplex is more simply called a omnitruncated 7-simplex with all of the nodes ringed.

Hexicated 7-simplex

Hexicated 7-simplex
Typeuniform 7-polytope
Schläfli symbolt0,6{36}
Coxeter-Dynkin diagrams
6-faces254:
8+8 {35}
28+28 {}x{34}
56+56 {3}x{3,3,3}
70 {3,3}x{3,3}
5-faces
4-faces
Cells
Faces
Edges336
Vertices56
Vertex figure5-simplex antiprism
Coxeter groupA7×2, [[36]], order 80640
Propertiesconvex

In seven-dimensional geometry, a hexicated 7-simplex is a convex uniform 7-polytope, a hexication (6th order truncation) of the regular 7-simplex, or alternately can be seen as an expansion operation.

The vertices of the A7 2D orthogonal projection are seen in the Ammann–Beenker tiling.

Root vectors

Its 56 vertices represent the root vectors of the simple Lie group A7.

Alternate names

  • Expanded 7-simplex
  • Small petated hexadecaexon (acronym: suph) (Jonathan Bowers)[1]

Coordinates

The vertices of the hexicated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,1,1,1,1,2). This construction is based on facets of the hexicated 8-orthoplex, .

A second construction in 8-space, from the center of a rectified 8-orthoplex is given by coordinate permutations of:

(1,-1,0,0,0,0,0,0)

Images

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Hexitruncated 7-simplex

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Alternate names

  • Petitruncated octaexon (acronym: puto) (Jonathan Bowers)[2]

Coordinates

The vertices of the hexitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,1,1,1,2,3). This construction is based on facets of the hexitruncated 8-orthoplex, .

Images

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Hexicantellated 7-simplex

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Alternate names

  • Petirhombated octaexon (acronym: puro) (Jonathan Bowers)[3]

Coordinates

The vertices of the hexicantellated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,1,1,2,2,3). This construction is based on facets of the hexicantellated 8-orthoplex, .

Images

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Hexiruncinated 7-simplex

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Alternate names

  • Petiprismated hexadecaexon (acronym: puph) (Jonathan Bowers)[4]

Coordinates

The vertices of the hexiruncinated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,1,2,2,2,3). This construction is based on facets of the hexiruncinated 8-orthoplex, .

Images

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Hexicantitruncated 7-simplex

More information Hexicantitruncated 7-simplex ...

Alternate names

  • Petigreatorhombated octaexon (acronym: pugro) (Jonathan Bowers)[5]

Coordinates

The vertices of the hexicantitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,1,1,2,3,4). This construction is based on facets of the hexicantitruncated 8-orthoplex, .

Images

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Hexiruncitruncated 7-simplex

More information Hexiruncitruncated 7-simplex ...

Alternate names

  • Petiprismatotruncated octaexon (acronym: pupato) (Jonathan Bowers)[6]

Coordinates

The vertices of the hexiruncitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,1,2,2,3,4). This construction is based on facets of the hexiruncitruncated 8-orthoplex, .

Images

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Hexiruncicantellated 7-simplex

More information Hexiruncicantellated 7-simplex ...

In seven-dimensional geometry, a hexiruncicantellated 7-simplex is a uniform 7-polytope.

Alternate names

  • Petiprismatorhombated octaexon (acronym: pupro) (Jonathan Bowers)[7]

Coordinates

The vertices of the hexiruncicantellated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,1,2,3,3,4). This construction is based on facets of the hexiruncicantellated 8-orthoplex, .

Images

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Hexisteritruncated 7-simplex

More information hexisteritruncated 7-simplex ...

Alternate names

  • Peticellitruncated octaexon (acronym: pucto) (Jonathan Bowers)[8]

Coordinates

The vertices of the hexisteritruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,2,2,2,3,4). This construction is based on facets of the hexisteritruncated 8-orthoplex, .

Images

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Hexistericantellated 7-simplex

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Alternate names

  • Peticellirhombihexadecaexon (acronym: pucroh) (Jonathan Bowers)[9]

Coordinates

The vertices of the hexistericantellated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,2,2,3,3,4). This construction is based on facets of the hexistericantellated 8-orthoplex, .

Images

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Hexipentitruncated 7-simplex

More information Hexipentitruncated 7-simplex ...

Alternate names

  • Petiteritruncated hexadecaexon (acronym: putath) (Jonathan Bowers)[10]

Coordinates

The vertices of the hexipentitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,2,2,2,2,3,4). This construction is based on facets of the hexipentitruncated 8-orthoplex, .

Images

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Hexiruncicantitruncated 7-simplex

More information Hexiruncicantitruncated 7-simplex ...

Alternate names

  • Petigreatoprismated octaexon (acronym: pugopo) (Jonathan Bowers)[11]

Coordinates

The vertices of the hexiruncicantitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,2,2,3,4,5). This construction is based on facets of the hexiruncicantitruncated 8-orthoplex, .

Images

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Hexistericantitruncated 7-simplex

More information Hexistericantitruncated 7-simplex ...

Alternate names

  • Peticelligreatorhombated octaexon (acronym: pucagro) (Jonathan Bowers)[12]

Coordinates

The vertices of the hexistericantitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,2,2,3,4,5). This construction is based on facets of the hexistericantitruncated 8-orthoplex, .

Images

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Hexisteriruncitruncated 7-simplex

More information Hexisteriruncitruncated 7-simplex ...

Alternate names

  • Peticelliprismatotruncated octaexon (acronym: pucpato) (Jonathan Bowers)[13]

Coordinates

The vertices of the hexisteriruncitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,2,3,3,4,5). This construction is based on facets of the hexisteriruncitruncated 8-orthoplex, .

Images

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Hexisteriruncicantellated 7-simplex

More information Hexisteriruncicantellated 7-simplex ...

Alternate names

  • Peticelliprismatorhombihexadecaexon (acronym: pucproh) (Jonathan Bowers)[14]

Coordinates

The vertices of the hexisteriruncitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,2,3,4,4,5). This construction is based on facets of the hexisteriruncitruncated 8-orthoplex, .

Images

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Hexipenticantitruncated 7-simplex

More information hexipenticantitruncated 7-simplex ...

Alternate names

  • Petiterigreatorhombated octaexon (acronym: putagro) (Jonathan Bowers)[15]

Coordinates

The vertices of the hexipenticantitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,2,2,2,3,4,5). This construction is based on facets of the hexipenticantitruncated 8-orthoplex, .

Images

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Hexipentiruncitruncated 7-simplex

More information Hexipentiruncitruncated 7-simplex ...

Alternate names

  • Petiteriprismatotruncated hexadecaexon (acronym: putpath) (Jonathan Bowers)[16]

Coordinates

The vertices of the hexipentiruncitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,2,2,3,4,4,5). This construction is based on facets of the hexipentiruncitruncated 8-orthoplex, .

Images

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Hexisteriruncicantitruncated 7-simplex

More information Hexisteriruncicantitruncated 7-simplex ...

Alternate names

  • Petigreatocellated octaexon (acronym: pugaco) (Jonathan Bowers)[17]

Coordinates

The vertices of the hexisteriruncicantitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,1,2,3,4,5,6). This construction is based on facets of the hexisteriruncicantitruncated 8-orthoplex, .

Images

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Hexipentiruncicantitruncated 7-simplex

More information Hexipentiruncicantitruncated 7-simplex ...

Alternate names

  • Petiterigreatoprismated octaexon (acronym: putgapo) (Jonathan Bowers)[18]

Coordinates

The vertices of the hexipentiruncicantitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,2,2,3,4,5,6). This construction is based on facets of the hexipentiruncicantitruncated 8-orthoplex, .

Images

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Hexipentistericantitruncated 7-simplex

More information Hexipentistericantitruncated 7-simplex ...

Alternate names

  • Petitericelligreatorhombihexadecaexon (acronym: putcagroh) (Jonathan Bowers)[19]

Coordinates

The vertices of the hexipentistericantitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,2,3,3,4,5,6). This construction is based on facets of the hexipentistericantitruncated 8-orthoplex, .

Images

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Omnitruncated 7-simplex

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The omnitruncated 7-simplex is composed of 40320 (8 factorial) vertices and is the largest uniform 7-polytope in the A7 symmetry of the regular 7-simplex. It can also be called the hexipentisteriruncicantitruncated 7-simplex which is the long name for the omnitruncation for 7 dimensions, with all reflective mirrors active.

The omnitruncated 7-simplex is the permutohedron of order 8. The omnitruncated 7-simplex is a zonotope, the Minkowski sum of eight line segments parallel to the eight lines through the origin and the eight vertices of the 7-simplex.

Like all uniform omnitruncated n-simplices, the omnitruncated 7-simplex can tessellate space by itself, in this case 7-dimensional space with three facets around each ridge. It has Coxeter-Dynkin diagram of .

Alternate names

  • Great petated hexadecaexon (Acronym: guph) (Jonathan Bowers)[20]

Coordinates

The vertices of the omnitruncated 7-simplex can be most simply positioned in 8-space as permutations of (0,1,2,3,4,5,6,7). This construction is based on facets of the hexipentisteriruncicantitruncated 8-orthoplex, t0,1,2,3,4,5,6{36,4}, .

Images

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These polytope are a part of 71 uniform 7-polytopes with A7 symmetry.


Notes

  1. Klitzing, (x3o3o3o3o3o3x - suph)
  2. Klitzing, (x3x3o3o3o3o3x- puto)
  3. Klitzing, (x3o3x3o3o3o3x - puro)
  4. Klitzing, (x3o3o3x3o3o3x - puph)
  5. Klitzing, (x3o3o3o3x3o3x - pugro)
  6. Klitzing, (x3x3x3o3o3o3x - pupato)
  7. Klitzing, (x3o3x3x3o3o3x - pupro)
  8. Klitzing, (x3x3o3o3x3o3x - pucto)
  9. Klitzing, (x3o3x3o3x3o3x - pucroh)
  10. Klitzing, (x3x3o3o3o3x3x - putath)
  11. Klitzing, (x3x3x3x3o3o3x - pugopo)
  12. Klitzing, (x3x3x3o3x3o3x - pucagro)
  13. Klitzing, (x3x3o3x3x3o3x - pucpato)
  14. Klitzing, (x3o3x3x3x3o3x - pucproh)
  15. Klitzing, (x3x3x3o3o3x3x - putagro)
  16. Klitzing, (x3x3o3x3o3x3x - putpath)
  17. Klitzing, (x3x3x3x3x3o3x - pugaco)
  18. Klitzing, (x3x3x3x3o3x3x - putgapo)
  19. Klitzing, (x3x3x3o3x3x3x - putcagroh)
  20. Klitzing, (x3x3x3x3x3x3x - guph)

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, wiley.com
      • (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, PhD (1966)
  • Klitzing, Richard. "7D". x3o3o3o3o3o3x - suph, x3x3o3o3o3o3x- puto, x3o3x3o3o3o3x - puro, x3o3o3x3o3o3x - puph, x3o3o3o3x3o3x - pugro, x3x3x3o3o3o3x - pupato, x3o3x3x3o3o3x - pupro, x3x3o3o3x3o3x - pucto, x3o3x3o3x3o3x - pucroh, x3x3o3o3o3x3x - putath, x3x3x3x3o3o3x - pugopo, x3x3x3o3x3o3x - pucagro, x3x3o3x3x3o3x - pucpato, x3o3x3x3x3o3x - pucproh, x3x3x3o3o3x3x - putagro, x3x3x3x3o3x3x - putpath, x3x3x3x3x3o3x - pugaco, x3x3x3x3o3x3x - putgapo, x3x3x3o3x3x3x - putcagroh, x3x3x3x3x3x3x - guph
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