Burgers vector

5-cubic honeycomb
(no image)
Type	Regular 5-space honeycomb
Family	Hypercube honeycomb
Schläfli symbol	{4,33,4} t0,5{4,33,4} {4,3,3,31,1} {4,3,4}x{∞} {4,3,4}x{4,4} {4,3,4}x{∞}2 {4,4}2x{∞} {∞}5
Coxeter-Dynkin diagrams	Template:CDD Template:CDD Template:CDD Template:CDD Template:CDD Template:CDD Template:CDD Template:CDD Template:CDD Template:CDD Template:CDD Template:CDD Template:CDD Template:CDD Template:CDD
5-face type	{4,33}
4-face type	{4,3,3}
Cell type	{4,3}
Face type	{4}
Face figure	{4,3} (octahedron)
Edge figure	8 {4,3,3} (16-cell)
Vertex figure	32 {4,33} (5-orthoplex)
Coxeter group	${\tilde {C}}_{5}$, [4,33,4]
Dual	self-dual
Properties	vertex-transitive, edge-transitive, face-transitive, cell-transitive

The 5-cubic honeycomb or penteractic honeycomb is the only regular space-filling tessellation (or honeycomb) in Euclidean 5-space. Four 5-cubes meet at each cubic cell, and it is more explicitly called an order-4 penteractic honeycomb.

It is analogous to the square tiling of the plane and to the cubic honeycomb of 3-space, and the tesseractic honeycomb of 4-space.

Constructions

There are many different Wythoff constructions of this honeycomb. The most symmetric form is regular, with Schläfli symbol {4,3³,4}. Another form has two alternating 5-cube facets (like a checkerboard) with Schläfli symbol {4,3,3,3^1,1}. The lowest symmetry Wythoff construction has 32 types of facets around each vertex and a prismatic product Schläfli symbol {∞}⁵.

Related polytopes and honeycombs

The [4,3³,4], Template:CDD, Coxeter group generates 63 permutations of uniform tessellations, 35 with unique symmetry and 34 with unique geometry. The expanded 5-cubic honeycomb is geometrically identical to the 5-cubic honeycomb.

The 5-cubic honeycomb can be alternated into the 5-demicubic honeycomb, replacing the 5-cubes with 5-demicubes, and the alternated gaps are filled by 5-orthoplex facets.

It is also related to the regular 6-cube which exists in 6-space with 3 5-cubes on each cell. This could be considered as a tessellation on the 5-sphere, an order-3 penteractic honeycomb, {4,3⁴}.

Tritruncated 5-cubic honeycomb

A tritruncated 5-cubic honeycomb, Template:CDD, containins all bitruncated 5-orthoplex facets and is the Voronoi tessellation of the D₅^* lattice. Facets can be identically colored from a doubled ${\tilde {C}}_{5}$×2, [[4,3³,4]] symmetry, alternately colored from ${\tilde {C}}_{5}$, [4,3³,4] symmetry, three colors from ${\tilde {B}}_{5}$, [4,3,3,3^1,1] symmetry, and 4 colors from ${\tilde {D}}_{5}$, [3^1,1,3,3^1,1] symmetry.

See also

• List of regular polytopes

Regular and uniform honeycombs in 5-space:

• 5-demicubic honeycomb
• 5-simplex honeycomb
• Truncated 5-simplex honeycomb
• Omnitruncated 5-simplex honeycomb

References

• Coxeter, H.S.M. Regular Polytopes, (3rd edition, 1973), Dover edition, ISBN 0-486-61480-8 p. 296, Table II: Regular honeycombs
• 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 24) H.S.M. Coxeter, Regular and Semi-Regular Polytopes III, [Math. Zeit. 200 (1988) 3-45]

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