Order-4-5 pentagonal honeycomb
Type Regular honeycomb
Schläfli symbol {5,4,5}
Coxeter diagrams
Cells {5,4}
Faces {5}
Edge figure {5}
Vertex figure {4,5}
Dual self-dual
Coxeter group [5,4,5]
Properties Regular

In the geometry of hyperbolic 3-space, the order-4-5 pentagonal honeycomb a regular space-filling tessellation (or honeycomb) with Schläfli symbol {5,4,5}.

Geometry

All vertices are ultra-ideal (existing beyond the ideal boundary) with five order-4 pentagonal tilings existing around each edge and with an order-5 square tiling vertex figure.


Poincaré disk model

Ideal surface

Related polytopes and honeycombs

It a part of a sequence of regular polychora and honeycombs {p,4,p}:

{p,4,p} regular honeycombs
Space S3 Euclidean E3 H3
Form Finite Paracompact Noncompact
Name {3,4,3} {4,4,4} {5,4,5} {6,4,6} {7,4,7} {8,4,8} ...{∞,4,∞}
Image
Cells
{p,4}

{3,4}

{4,4}

{5,4}

{6,4}

{7,4}

{8,4}

{∞,4}
Vertex
figure
{4,p}

{4,3}

{4,4}

{4,5}

{4,6}

{4,7}

{4,8}

{4,∞}

Order-4-6 hexagonal honeycomb

Order-4-6 hexagonal honeycomb
Type Regular honeycomb
Schläfli symbols {6,4,6}
{6,(4,3,4)}
Coxeter diagrams
=
Cells {6,4}
Faces {6}
Edge figure {6}
Vertex figure {4,6}
{(4,3,4)}
Dual self-dual
Coxeter group [6,4,6]
[6,((4,3,4))]
Properties Regular

In the geometry of hyperbolic 3-space, the order-4-6 hexagonal honeycomb is a regular space-filling tessellation (or honeycomb) with Schläfli symbol {6,3,6}. It has six order-4 hexagonal tilings, {6,4}, around each edge. All vertices are ultra-ideal (existing beyond the ideal boundary) with infinitely many hexagonal tilings existing around each vertex in an order-6 square tiling vertex arrangement.


Poincaré disk model

Ideal surface

It has a second construction as a uniform honeycomb, Schläfli symbol {6,(4,3,4)}, Coxeter diagram, , with alternating types or colors of cells. In Coxeter notation the half symmetry is [6,4,6,1+] = [6,((4,3,4))].

Order-4-infinite apeirogonal honeycomb

Order-4-infinite apeirogonal honeycomb
Type Regular honeycomb
Schläfli symbols {∞,4,∞}
{∞,(4,∞,4)}
Coxeter diagrams
Cells {∞,4}
Faces {∞}
Edge figure {∞}
Vertex figure {4,∞}
{(4,∞,4)}
Dual self-dual
Coxeter group [∞,4,∞]
[∞,((4,∞,4))]
Properties Regular

In the geometry of hyperbolic 3-space, the order-4-infinite apeirogonal honeycomb is a regular space-filling tessellation (or honeycomb) with Schläfli symbol {∞,4,∞}. It has infinitely many order-4 apeirogonal tiling {∞,4} around each edge. All vertices are ultra-ideal (existing beyond the ideal boundary) with infinitely many hexagonal tilings existing around each vertex in an infinite-order square tiling vertex arrangement.


Poincaré disk model

Ideal surface

It has a second construction as a uniform honeycomb, Schläfli symbol {∞,(4,∞,4)}, Coxeter diagram, , with alternating types or colors of cells.

See also

References