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Polytope of Type {10,4,8}

This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {10,4,8}*1920b
if this polytope has a name.
Group : SmallGroup(1920,240558)
Rank : 4
Schlafli Type : {10,4,8}
Number of vertices, edges, etc : 30, 60, 48, 8
Order of s0s1s2s3 : 24
Order of s0s1s2s3s2s1 : 2
Special Properties :
   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 : {5,4,8}*960, {10,4,4}*960b
   4-fold quotients : {5,4,4}*480, {10,4,2}*480b
   8-fold quotients : {5,4,2}*240
Covers (Minimal Covers in Boldface) :
   None in this atlas.
Permutation Representation (GAP) :
s0 := ( 1,16)( 2,14)( 3,13)( 4, 9)( 5,15)( 6, 8)( 7,12)(10,11)(18,21)(19,20);;
s1 := (17,20)(19,21);;
s2 := ( 1, 7)( 2, 6)( 3,15)( 4,10)( 5,13)( 8,14)( 9,11)(12,16)(19,20);;
s3 := ( 1,16)( 2, 9)( 3, 8)( 4,14)( 5,12)( 6,13)( 7,15)(10,11);;
poly := Group([s0,s1,s2,s3]);;
 
Finitely Presented Group Representation (GAP) :
F := FreeGroup("s0","s1","s2","s3");;
s0 := F.1;;  s1 := F.2;;  s2 := F.3;;  s3 := F.4;;  
rels := [ s0*s0, s1*s1, s2*s2, s3*s3, s0*s2*s0*s2, 
s0*s3*s0*s3, s1*s3*s1*s3, s1*s2*s1*s2*s1*s2*s1*s2, 
s1*s2*s3*s2*s1*s2*s3*s2, s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3, 
s0*s1*s0*s1*s0*s1*s2*s0*s1*s0*s2*s1*s2*s1*s0*s1*s2 ];;
poly := F / rels;;
 
Permutation Representation (Magma) :
s0 := Sym(21)!( 1,16)( 2,14)( 3,13)( 4, 9)( 5,15)( 6, 8)( 7,12)(10,11)(18,21)
(19,20);
s1 := Sym(21)!(17,20)(19,21);
s2 := Sym(21)!( 1, 7)( 2, 6)( 3,15)( 4,10)( 5,13)( 8,14)( 9,11)(12,16)(19,20);
s3 := Sym(21)!( 1,16)( 2, 9)( 3, 8)( 4,14)( 5,12)( 6,13)( 7,15)(10,11);
poly := sub<Sym(21)|s0,s1,s2,s3>;
 
Finitely Presented Group Representation (Magma) :
poly<s0,s1,s2,s3> := Group< s0,s1,s2,s3 | s0*s0, s1*s1, s2*s2, 
s3*s3, s0*s2*s0*s2, s0*s3*s0*s3, s1*s3*s1*s3, 
s1*s2*s1*s2*s1*s2*s1*s2, s1*s2*s3*s2*s1*s2*s3*s2, 
s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3, 
s0*s1*s0*s1*s0*s1*s2*s0*s1*s0*s2*s1*s2*s1*s0*s1*s2 >; 
 
References : None.
to this polytope