Polytope of Type {9,2,15}

This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {9,2,15}*540
if this polytope has a name.
Group : SmallGroup(540,53)
Rank : 4
Schlafli Type : {9,2,15}
Number of vertices, edges, etc : 9, 9, 15, 15
Order of s0s1s2s3 : 45
Order of s0s1s2s3s2s1 : 2
Special Properties :
   Degenerate
   Universal
   Orientable
   Flat
Related Polytopes :
   Facet
   Vertex Figure
   Dual
Facet Of :
   {9,2,15,2} of size 1080
Vertex Figure Of :
   {2,9,2,15} of size 1080
Quotients (Maximal Quotients in Boldface) :
   3-fold quotients : {9,2,5}*180, {3,2,15}*180
   5-fold quotients : {9,2,3}*108
   9-fold quotients : {3,2,5}*60
   15-fold quotients : {3,2,3}*36
Covers (Minimal Covers in Boldface) :
   2-fold covers : {9,2,30}*1080, {18,2,15}*1080
   3-fold covers : {9,2,45}*1620, {9,6,15}*1620, {27,2,15}*1620
Permutation Representation (GAP) :
s0 := (2,3)(4,5)(6,7)(8,9);;
s1 := (1,2)(3,4)(5,6)(7,8);;
s2 := (11,12)(13,14)(15,16)(17,18)(19,20)(21,22)(23,24);;
s3 := (10,11)(12,13)(14,15)(16,17)(18,19)(20,21)(22,23);;
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, 
s1*s2*s1*s2, s0*s3*s0*s3, s1*s3*s1*s3, 
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1, 
s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3 ];;
poly := F / rels;;
 
Permutation Representation (Magma) :
s0 := Sym(24)!(2,3)(4,5)(6,7)(8,9);
s1 := Sym(24)!(1,2)(3,4)(5,6)(7,8);
s2 := Sym(24)!(11,12)(13,14)(15,16)(17,18)(19,20)(21,22)(23,24);
s3 := Sym(24)!(10,11)(12,13)(14,15)(16,17)(18,19)(20,21)(22,23);
poly := sub<Sym(24)|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, s1*s2*s1*s2, s0*s3*s0*s3, 
s1*s3*s1*s3, s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1, 
s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3 >; 
 

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