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Order-3-7 hexagonal honeycomb

(Redirected from Order-8 hexagonal tiling honeycomb)
Order-3-7 hexagonal honeycomb

Poincaré disk model
Type Regular honeycomb
Schläfli symbol {6,3,7}
Coxeter diagrams
Cells {6,3}
Faces {6}
Edge figure {7}
Vertex figure {3,7}
Dual {7,3,6}
Coxeter group [6,3,7]
Properties Regular

In the geometry of hyperbolic 3-space, the order-3-7 hexagonal honeycomb or (6,3,7 honeycomb) a regular space-filling tessellation (or honeycomb) with Schläfli symbol {6,3,7}.

Geometry edit

All vertices are ultra-ideal (existing beyond the ideal boundary) with seven hexagonal tilings existing around each edge and with an order-7 triangular tiling vertex figure.

Ideal surface
 
Rendered intersection of honeycomb with the ideal plane in Poincaré half-space model 		 
Closeup

Related polytopes and honeycombs edit

It a part of a sequence of regular polychora and honeycombs with hexagonal tiling cells.

{6,3,p} honeycombs
Space H3
Form Paracompact Noncompact
Name {6,3,3} {6,3,4} {6,3,5} {6,3,6} {6,3,7} {6,3,8} ... {6,3,∞}
Coxeter
       
        		               
     
        		               
     
        		               
       		       
      
 
Image              
Vertex
figure
{3,p}
      		 
{3,3}
      		 
{3,4}
     
    		 
{3,5}
      		 
{3,6}
     
    		 
{3,7}
      		 
{3,8}
     
     		 
{3,∞}
     
    

Order-3-8 hexagonal honeycomb edit

Order-3-8 hexagonal honeycomb
Type Regular honeycomb
Schläfli symbols {6,3,8}
{6,(3,4,3)}
Coxeter diagrams        
        =       
Cells {6,3}  
Faces {6}
Edge figure {8}
Vertex figure {3,8} {(3,4,3)}
  
Dual {8,3,6}
Coxeter group [6,3,8]
[6,((3,4,3))]
Properties Regular

In the geometry of hyperbolic 3-space, the order-3-8 hexagonal honeycomb or (6,3,8 honeycomb) is a regular space-filling tessellation (or honeycomb) with Schläfli symbol {6,3,8}. It has eight hexagonal tilings, {6,3}, 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-8 triangular tiling vertex arrangement.

 
Poincaré disk model

It has a second construction as a uniform honeycomb, Schläfli symbol {6,(3,4,3)}, Coxeter diagram,       , with alternating types or colors of tetrahedral cells. In Coxeter notation the half symmetry is [6,3,8,1+] = [6,((3,4,3))].

Order-3-infinite hexagonal honeycomb edit

Order-3-infinite hexagonal honeycomb
Type Regular honeycomb
Schläfli symbols {6,3,∞}
{6,(3,∞,3)}
Coxeter diagrams        
        ↔       
        ↔  
Cells {6,3}  
Faces {6}
Edge figure {∞}
Vertex figure {3,∞}, {(3,∞,3)}
  
Dual {∞,3,6}
Coxeter group [6,3,∞]
[6,((3,∞,3))]
Properties Regular

In the geometry of hyperbolic 3-space, the order-3-infinite hexagonal honeycomb or (6,3,∞ honeycomb) is a regular space-filling tessellation (or honeycomb) with Schläfli symbol {6,3,∞}. It has infinitely many hexagonal tiling {6,3} 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 triangular tiling vertex arrangement.

 
Poincaré disk model 		 
Ideal surface

It has a second construction as a uniform honeycomb, Schläfli symbol {6,(3,∞,3)}, Coxeter diagram,       , with alternating types or colors of hexagonal tiling cells.

See also edit

References edit

  • Coxeter, Regular Polytopes, 3rd. ed., Dover Publications, 1973. ISBN 0-486-61480-8. (Tables I and II: Regular polytopes and honeycombs, pp. 294–296)
  • The Beauty of Geometry: Twelve Essays (1999), Dover Publications, LCCN 99-35678, ISBN 0-486-40919-8 (Chapter 10, Regular Honeycombs in Hyperbolic Space) Table III
  • Jeffrey R. Weeks The Shape of Space, 2nd edition ISBN 0-8247-0709-5 (Chapters 16–17: Geometries on Three-manifolds I, II)
  • George Maxwell, Sphere Packings and Hyperbolic Reflection Groups, JOURNAL OF ALGEBRA 79,78-97 (1982) [1]
  • Hao Chen, Jean-Philippe Labbé, Lorentzian Coxeter groups and Boyd-Maxwell ball packings, (2013)[2]
  • Visualizing Hyperbolic Honeycombs arXiv:1511.02851 Roice Nelson, Henry Segerman (2015)

External links edit

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