Its symmetry by 3333 or, order 155,520. It has 240 copies of, order 648 at each cell.
Structure
The configuration matrix is: The number of vertices, edges, faces, and cells are seen in the diagonal of the matrix. These are computed by the order of the group divided by the order of the subgroup, by removing certain complex reflections, shown with X below. The number of elements of the k-faces are seen in rows below the diagonal. The number of elements in the vertex figure, etc, are given in rows above the digonal.
L4
k-face
fk
f0
f1
f2
f3
k-figure
Notes
L3
f0
240
27
72
27
333
L4/L3 = 216*6!/27/4! = 240
L2L1
3
f1
3
2160
8
8
33
L4/L2L1 = 216*6!/4!/3 = 2160
L2L1
33
f2
8
8
2160
3
3
L4/L2L1 = 216*6!/4!/3 = 2160
L3
333
f3
27
72
27
240
L4/L3 = 216*6!/27/4! = 240
Coordinates
Its 240 vertices are given coordinates in :
where. The last 6 points form hexagonalholes on one of its 40 diameters. There are 40 hyperplanes contain central332, figures, with 72 vertices.
Coxeter named it after Alexander Witting for being a Witting configuration in complex projective 3-space: The Witting configuration is related to the finite spacePG, consisting of 85 points, 357 lines, and 85 planes.
Related real polytope
Its 240 vertices are shared with the real 8-dimensional polytope 421,. Its 2160 3-edges are sometimes drawn as 6480 simple edges, slightly less than the 6720 edges of 421. The 240 difference is accounted by 40 central hexagons in 421 whose edges are not included in 3333.
The regular Witting polytope has one further stage as a 4-dimensional honeycomb,. It has the Witting polytope as both its facets, and vertex figure. It is self-dual, and its dual coincides with itself. Hyperplane sections of this honeycomb include 3-dimensional honeycombs. The honeycomb of Witting polytopes has a real representation as the 8-dimensional polytope 521,. Its f-vector element counts are in proportion: 1, 80, 270, 80, 1. The configuration matrix for the honeycomb is:
