Rectified 10-orthoplexes explained

In ten-dimensional geometry, a rectified 10-orthoplex is a convex uniform 10-polytope, being a rectification of the regular 10-orthoplex.

There are 10 rectifications of the 10-orthoplex. Vertices of the rectified 10-orthoplex are located at the edge-centers of the 9-orthoplex. Vertices of the birectified 10-orthoplex are located in the triangular face centers of the 10-orthoplex. Vertices of the trirectified 10-orthoplex are located in the tetrahedral cell centers of the 10-orthoplex.

These polytopes are part of a family 1023 uniform 10-polytopes with BC10 symmetry.

Rectified 10-orthoplex

bgcolor=#e7dcc3 colspan=2Rectified 10-orthoplex
Typeuniform 10-polytope
Schläfli symbolt1
Coxeter-Dynkin diagrams
7-faces
6-faces
5-faces
4-faces
Cells
Faces
Edges2880
Vertices180
Vertex figure8-orthoplex prism
Petrie polygonicosagon
Coxeter groupsC10, [4,3<sup>8</sup>]
D10, [3<sup>7,1,1</sup>]
Propertiesconvex
In ten-dimensional geometry, a rectified 10-orthoplex is a 10-polytope, being a rectification of the regular 10-orthoplex.

Rectified 10-orthoplex

The rectified 10-orthoplex is the vertex figure for the demidekeractic honeycomb.

or

Alternate names

Construction

There are two Coxeter groups associated with the rectified 10-orthoplex, one with the C10 or [4,3<sup>8</sup>] Coxeter group, and a lower symmetry with two copies of 9-orthoplex facets, alternating, with the D10 or [3<sup>7,1,1</sup>] Coxeter group.

Cartesian coordinates

Cartesian coordinates for the vertices of a rectified 10-orthoplex, centered at the origin, edge length

\sqrt{2}

are all permutations of:

(±1,±1,0,0,0,0,0,0,0,0)

Root vectors

Its 180 vertices represent the root vectors of the simple Lie group D10. The vertices can be seen in 3 hyperplanes, with the 45 vertices rectified 9-simplices facets on opposite sides, and 90 vertices of an expanded 9-simplex passing through the center. When combined with the 20 vertices of the 9-orthoplex, these vertices represent the 200 root vectors of the simple Lie group B10.

Images

Birectified 10-orthoplex

bgcolor=#e7dcc3 colspan=2Birectified 10-orthoplex
Typeuniform 10-polytope
Schläfli symbolt2
Coxeter-Dynkin diagrams
7-faces
6-faces
5-faces
4-faces
Cells
Faces
Edges
Vertices
Vertex figure
Coxeter groupsC10, [4,3<sup>8</sup>]
D10, [3<sup>7,1,1</sup>]
Propertiesconvex

Alternate names

Cartesian coordinates

Cartesian coordinates for the vertices of a birectified 10-orthoplex, centered at the origin, edge length

\sqrt{2}

are all permutations of:

(±1,±1,±1,0,0,0,0,0,0,0)

Images

Trirectified 10-orthoplex

bgcolor=#e7dcc3 colspan=2Trirectified 10-orthoplex
Typeuniform 10-polytope
Schläfli symbolt3
Coxeter-Dynkin diagrams
7-faces
6-faces
5-faces
4-faces
Cells
Faces
Edges
Vertices
Vertex figure
Coxeter groupsC10, [4,3<sup>8</sup>]
D10, [3<sup>7,1,1</sup>]
Propertiesconvex

Alternate names

Cartesian coordinates

Cartesian coordinates for the vertices of a trirectified 10-orthoplex, centered at the origin, edge length

\sqrt{2}

are all permutations of:

(±1,±1,±1,±1,0,0,0,0,0,0)

Images

Quadrirectified 10-orthoplex

bgcolor=#e7dcc3 colspan=2Quadrirectified 10-orthoplex
Typeuniform 10-polytope
Schläfli symbolt4
Coxeter-Dynkin diagrams
7-faces
6-faces
5-faces
4-faces
Cells
Faces
Edges
Vertices
Vertex figure
Coxeter groupsC10, [4,3<sup>8</sup>]
D10, [3<sup>7,1,1</sup>]
Propertiesconvex

Alternate names

Cartesian coordinates

Cartesian coordinates for the vertices of a quadrirectified 10-orthoplex, centered at the origin, edge length

\sqrt{2}

are all permutations of:

(±1,±1,±1,±1,±1,0,0,0,0,0)

Images

References

External links

Notes and References

  1. Klitzing, (o3x3o3o3o3o3o3o3o4o — rake)
  2. Klitzing, (o3o3o3x3o3o3o3o3o4o - trake)
  3. Klitzing, (o3o3x3o3o3o3o3o3o4o - brake)