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Polytope of Type {18,2,2,4}

This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {18,2,2,4}*576
if this polytope has a name.
Group : SmallGroup(576,5012)
Rank : 5
Schlafli Type : {18,2,2,4}
Number of vertices, edges, etc : 18, 18, 2, 4, 4
Order of s0s1s2s3s4 : 36
Order of s0s1s2s3s4s3s2s1 : 2
Special Properties :
   Degenerate
   Universal
   Orientable
   Flat
Related Polytopes :
   Facet
   Vertex Figure
   Dual
Facet Of :
   {18,2,2,4,2} of size 1152
   {18,2,2,4,3} of size 1728
Vertex Figure Of :
   {2,18,2,2,4} of size 1152
Quotients (Maximal Quotients in Boldface) :
   2-fold quotients : {9,2,2,4}*288, {18,2,2,2}*288
   3-fold quotients : {6,2,2,4}*192
   4-fold quotients : {9,2,2,2}*144
   6-fold quotients : {3,2,2,4}*96, {6,2,2,2}*96
   9-fold quotients : {2,2,2,4}*64
   12-fold quotients : {3,2,2,2}*48
   18-fold quotients : {2,2,2,2}*32
Covers (Minimal Covers in Boldface) :
   2-fold covers : {18,2,4,4}*1152, {18,4,2,4}*1152a, {36,2,2,4}*1152, {18,2,2,8}*1152
   3-fold covers : {54,2,2,4}*1728, {18,2,2,12}*1728, {18,2,6,4}*1728a, {18,6,2,4}*1728a, {18,6,2,4}*1728b
Permutation Representation (GAP) :
s0 := ( 3, 4)( 5, 6)( 7, 8)( 9,10)(11,12)(13,14)(15,16)(17,18);;
s1 := ( 1, 5)( 2, 3)( 4, 9)( 6, 7)( 8,13)(10,11)(12,17)(14,15)(16,18);;
s2 := (19,20);;
s3 := (22,23);;
s4 := (21,22)(23,24);;
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*s2*s0*s2, 
s1*s2*s1*s2, s0*s3*s0*s3, s1*s3*s1*s3, 
s2*s3*s2*s3, s0*s4*s0*s4, s1*s4*s1*s4, 
s2*s4*s2*s4, s3*s4*s3*s4*s3*s4*s3*s4, 
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*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(24)!( 3, 4)( 5, 6)( 7, 8)( 9,10)(11,12)(13,14)(15,16)(17,18);
s1 := Sym(24)!( 1, 5)( 2, 3)( 4, 9)( 6, 7)( 8,13)(10,11)(12,17)(14,15)(16,18);
s2 := Sym(24)!(19,20);
s3 := Sym(24)!(22,23);
s4 := Sym(24)!(21,22)(23,24);
poly := sub<Sym(24)|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*s2*s0*s2, s1*s2*s1*s2, 
s0*s3*s0*s3, s1*s3*s1*s3, s2*s3*s2*s3, 
s0*s4*s0*s4, s1*s4*s1*s4, s2*s4*s2*s4, 
s3*s4*s3*s4*s3*s4*s3*s4, s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1 >; 
 

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