Polytope of Type {18,2,4}

This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {18,2,4}*288
if this polytope has a name.
Group : SmallGroup(288,356)
Rank : 4
Schlafli Type : {18,2,4}
Number of vertices, edges, etc : 18, 18, 4, 4
Order of s₀s₁s₂s₃ : 36
Order of s₀s₁s₂s₃s₂s₁ : 2
Special Properties :
   Degenerate
   Universal
   Orientable
   Flat
Related Polytopes :
   Facet
   Vertex Figure
   Dual
Facet Of :
   {18,2,4,2} of size 576
   {18,2,4,3} of size 864
   {18,2,4,4} of size 1152
   {18,2,4,6} of size 1728
   {18,2,4,3} of size 1728
   {18,2,4,6} of size 1728
   {18,2,4,6} of size 1728
Vertex Figure Of :
   {2,18,2,4} of size 576
   {4,18,2,4} of size 1152
   {4,18,2,4} of size 1152
   {4,18,2,4} of size 1152
   {6,18,2,4} of size 1728
   {6,18,2,4} of size 1728
Quotients (Maximal Quotients in Boldface) :
   2-fold quotients : {9,2,4}*144, {18,2,2}*144
   3-fold quotients : {6,2,4}*96
   4-fold quotients : {9,2,2}*72
   6-fold quotients : {3,2,4}*48, {6,2,2}*48
   9-fold quotients : {2,2,4}*32
   12-fold quotients : {3,2,2}*24
   18-fold quotients : {2,2,2}*16
Covers (Minimal Covers in Boldface) :
   2-fold covers : {36,2,4}*576, {18,4,4}*576, {18,2,8}*576
   3-fold covers : {54,2,4}*864, {18,2,12}*864, {18,6,4}*864a, {18,6,4}*864b
   4-fold covers : {36,4,4}*1152, {18,4,8}*1152a, {18,8,4}*1152a, {18,4,8}*1152b, {18,8,4}*1152b, {18,4,4}*1152a, {36,2,8}*1152, {72,2,4}*1152, {18,2,16}*1152, {18,4,4}*1152d
   5-fold covers : {18,2,20}*1440, {18,10,4}*1440, {90,2,4}*1440
   6-fold covers : {108,2,4}*1728, {54,4,4}*1728, {54,2,8}*1728, {36,2,12}*1728, {36,6,4}*1728a, {18,4,12}*1728, {18,12,4}*1728a, {18,2,24}*1728, {18,6,8}*1728a, {36,6,4}*1728b, {18,6,8}*1728b, {18,12,4}*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 := (20,21);;
s3 := (19,20)(21,22);;
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, 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(22)!( 3, 4)( 5, 6)( 7, 8)( 9,10)(11,12)(13,14)(15,16)(17,18);
s1 := Sym(22)!( 1, 5)( 2, 3)( 4, 9)( 6, 7)( 8,13)(10,11)(12,17)(14,15)(16,18);
s2 := Sym(22)!(20,21);
s3 := Sym(22)!(19,20)(21,22);
poly := sub<Sym(22)|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, 
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 >;

to this polytope