Polytope of Type {10,2,9}

This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {10,2,9}*360
if this polytope has a name.
Group : SmallGroup(360,45)
Rank : 4
Schlafli Type : {10,2,9}
Number of vertices, edges, etc : 10, 10, 9, 9
Order of s₀s₁s₂s₃ : 90
Order of s₀s₁s₂s₃s₂s₁ : 2
Special Properties :
   Degenerate
   Universal
   Orientable
   Flat
Related Polytopes :
   Facet
   Vertex Figure
   Dual
Facet Of :
   {10,2,9,2} of size 720
   {10,2,9,4} of size 1440
Vertex Figure Of :
   {2,10,2,9} of size 720
   {4,10,2,9} of size 1440
   {5,10,2,9} of size 1800
Quotients (Maximal Quotients in Boldface) :
   2-fold quotients : {5,2,9}*180
   3-fold quotients : {10,2,3}*120
   5-fold quotients : {2,2,9}*72
   6-fold quotients : {5,2,3}*60
   15-fold quotients : {2,2,3}*24
Covers (Minimal Covers in Boldface) :
   2-fold covers : {20,2,9}*720, {10,2,18}*720
   3-fold covers : {10,2,27}*1080, {10,6,9}*1080, {30,2,9}*1080
   4-fold covers : {40,2,9}*1440, {10,2,36}*1440, {20,2,18}*1440, {10,4,18}*1440, {10,4,9}*1440
   5-fold covers : {50,2,9}*1800, {10,2,45}*1800
Permutation Representation (GAP) :

s0 := ( 3, 4)( 5, 6)( 7, 8)( 9,10);;
s1 := ( 1, 5)( 2, 3)( 4, 9)( 6, 7)( 8,10);;
s2 := (12,13)(14,15)(16,17)(18,19);;
s3 := (11,12)(13,14)(15,16)(17,18);;
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, 
s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3, 
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1 ];;
poly := F / rels;;

Permutation Representation (Magma) :

s0 := Sym(19)!( 3, 4)( 5, 6)( 7, 8)( 9,10);
s1 := Sym(19)!( 1, 5)( 2, 3)( 4, 9)( 6, 7)( 8,10);
s2 := Sym(19)!(12,13)(14,15)(16,17)(18,19);
s3 := Sym(19)!(11,12)(13,14)(15,16)(17,18);
poly := sub<Sym(19)|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, s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3, 
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1 >;

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