Polytope of Type {4,8}
Play with this polytope as a twisty puzzle
This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {4,8}*1440d
if this polytope has a name.
Group : SmallGroup(1440,5843)
Rank : 3
Schlafli Type : {4,8}
Number of vertices, edges, etc : 90, 360, 180
Order of s0s1s2 : 10
Order of s0s1s2s1 : 10
Special Properties :
Compact Hyperbolic Quotient
Locally Spherical
Orientable
Related Polytopes :
Facet
Vertex Figure
Dual
Petrial
Halving Operation
Facet Of :
None in this Atlas
Vertex Figure Of :
None in this Atlas
Quotients (Maximal Quotients in Boldface) :
2-fold quotients : {4,8}*720
Covers (Minimal Covers in Boldface) :
None in this atlas.
Irregular Quotients (of which this is a minimal cover):
P/N, where N=<s1*s0*s1*s2*s1*s0*s1*s2*s1*s0*s2*s1*s2*s1> of order 2.
92 facets:
88 of {4}*8
4 of {2}*4
46 vertex figures:
44 of {8}*16
2 of {4}*8
P/N, where N=<s0*s2*s1*s0*s1*s2*s1*s0*s2*s1*s2*s1> of order 3.
60 facets:
60 of {4}*8
30 vertex figures:
30 of {8}*16
P/N, where N=<s1*s0*s1*s2*s1*s0*s1*s2*s1*s0*s2*s1*s2*s1, s1*s0*s2*s1*s0*s2*s1*s0*s1*s2*s1*s0*s2*s1> of order 4.
48 facets:
42 of {4}*8
6 of {2}*4
24 vertex figures:
21 of {8}*16
3 of {4}*8
P/N, where N=<s0*s1*s0*s1, s0*s2*s1*s0*s1*s2*s1*s0*s2*s1*s2*s1> of order 6.
32 facets:
4 of {2}*4
28 of {4}*8
16 vertex figures:
14 of {8}*16
2 of {4}*8
P/N, where N=<s0*s2*s1*s0*s1*s2*s1*s0*s2*s1*s2*s1, s0*s1*s0*s2*s1*s0*s1*s2*s1*s0*s2*s1*s0*s2> of order 9.
20 facets:
20 of {4}*8
10 vertex figures:
10 of {8}*16
P/N, where N=<s0*s1*s0*s2*s1*s0*s2*s1*s2*s1*s2*s1, s0*s1*s2*s1*s2*s1*s2*s1*s0*s1*s2*s1> of order 12.
16 facets:
14 of {4}*8
2 of {2}*4
8 vertex figures:
7 of {8}*16
1 of {4}*8
P/N, where N=<s0*s1*s0*s1, s0*s2*s1*s0*s1*s2*s1*s0*s2*s1*s2*s1, s0*s2*s1*s0*s2*s1*s2*s1*s0*s1*s2*s1> of order 18.
12 facets:
4 of {2}*4
8 of {4}*8
6 vertex figures:
4 of {8}*16
2 of {4}*8
Permutation Representation (GAP) :
s0 := ( 1, 3)( 2, 6)( 4, 9)( 5, 7)( 8,10);;
s1 := ( 1, 3)( 2, 8)( 4, 6)( 5,10)( 7, 9);;
s2 := ( 1, 4)( 3, 9)( 5,10)( 7, 8)(11,12);;
poly := Group([s0,s1,s2]);;
Finitely Presented Group Representation (GAP) :
F := FreeGroup("s0","s1","s2");;
s0 := F.1;; s1 := F.2;; s2 := F.3;;
rels := [ s0*s0, s1*s1, s2*s2, s0*s2*s0*s2, s0*s1*s0*s1*s0*s1*s0*s1,
s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2,
s0*s1*s2*s1*s2*s0*s1*s2*s0*s1*s2*s1*s0*s1*s2*s1*s2*s0*s1*s2*s0*s1*s2*s1,
s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1*s2*s1*s0*s2*s1*s0*s2*s1*s2*s1*s2*s1 ];;
poly := F / rels;;
Permutation Representation (Magma) :
s0 := Sym(12)!( 1, 3)( 2, 6)( 4, 9)( 5, 7)( 8,10);
s1 := Sym(12)!( 1, 3)( 2, 8)( 4, 6)( 5,10)( 7, 9);
s2 := Sym(12)!( 1, 4)( 3, 9)( 5,10)( 7, 8)(11,12);
poly := sub<Sym(12)|s0,s1,s2>;
Finitely Presented Group Representation (Magma) :
poly<s0,s1,s2> := Group< s0,s1,s2 | s0*s0, s1*s1, s2*s2,
s0*s2*s0*s2, s0*s1*s0*s1*s0*s1*s0*s1,
s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2,
s0*s1*s2*s1*s2*s0*s1*s2*s0*s1*s2*s1*s0*s1*s2*s1*s2*s0*s1*s2*s0*s1*s2*s1,
s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1*s2*s1*s0*s2*s1*s0*s2*s1*s2*s1*s2*s1 >;
References : None.
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