Polytope of Type {2,5,4,8}
This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {2,5,4,8}*1920
if this polytope has a name.
Group : SmallGroup(1920,240558)
Rank : 5
Schlafli Type : {2,5,4,8}
Number of vertices, edges, etc : 2, 15, 30, 48, 8
Order of s0s1s2s3s4 : 24
Order of s0s1s2s3s4s3s2s1 : 2
Special Properties :
Degenerate
Universal
Non-Orientable
Flat
Related Polytopes :
Facet
Vertex Figure
Dual
Facet Of :
None in this Atlas
Vertex Figure Of :
None in this Atlas
Quotients (Maximal Quotients in Boldface) :
2-fold quotients : {2,5,4,4}*960
4-fold quotients : {2,5,4,2}*480
Covers (Minimal Covers in Boldface) :
None in this atlas.
Permutation Representation (GAP) :
s0 := (1,2);;
s1 := (12,13)(14,15);;
s2 := (11,12)(13,14);;
s3 := ( 4, 9)( 5, 7)( 8,10)(12,13);;
s4 := ( 3, 4)( 5, 6)( 7,10)( 8, 9);;
poly := Group([s0,s1,s2,s3,s4]);;
Finitely Presented Group Representation (GAP) :
F := FreeGroup("s0","s1","s2","s3","s4");;
s0 := F.1;; s1 := F.2;; s2 := F.3;; s3 := F.4;; s4 := F.5;;
rels := [ s0*s0, s1*s1, s2*s2, s3*s3, s4*s4, s0*s1*s0*s1,
s0*s2*s0*s2, s0*s3*s0*s3, s1*s3*s1*s3,
s0*s4*s0*s4, s1*s4*s1*s4, s2*s4*s2*s4,
s2*s3*s2*s3*s2*s3*s2*s3, s2*s3*s4*s3*s2*s3*s4*s3,
s1*s2*s1*s2*s1*s2*s1*s2*s1*s2, s3*s2*s3*s1*s2*s3*s2*s1*s2*s3*s2*s1*s2,
s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4 ];;
poly := F / rels;;
Permutation Representation (Magma) :
s0 := Sym(15)!(1,2);
s1 := Sym(15)!(12,13)(14,15);
s2 := Sym(15)!(11,12)(13,14);
s3 := Sym(15)!( 4, 9)( 5, 7)( 8,10)(12,13);
s4 := Sym(15)!( 3, 4)( 5, 6)( 7,10)( 8, 9);
poly := sub<Sym(15)|s0,s1,s2,s3,s4>;
Finitely Presented Group Representation (Magma) :
poly<s0,s1,s2,s3,s4> := Group< s0,s1,s2,s3,s4 | s0*s0, s1*s1, s2*s2,
s3*s3, s4*s4, s0*s1*s0*s1, s0*s2*s0*s2,
s0*s3*s0*s3, s1*s3*s1*s3, s0*s4*s0*s4,
s1*s4*s1*s4, s2*s4*s2*s4, s2*s3*s2*s3*s2*s3*s2*s3,
s2*s3*s4*s3*s2*s3*s4*s3, s1*s2*s1*s2*s1*s2*s1*s2*s1*s2,
s3*s2*s3*s1*s2*s3*s2*s1*s2*s3*s2*s1*s2,
s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4 >;
to this polytope