Polytope of Type {3,18}

This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {3,18}*972b
Also Known As : {3,18}₆. if this polytope has another name.
Group : SmallGroup(972,115)
Rank : 3
Schlafli Type : {3,18}
Number of vertices, edges, etc : 27, 243, 162
Order of s₀s₁s₂ : 6
Order of s₀s₁s₂s₁ : 18
Special Properties :
   Compact Hyperbolic Quotient
   Locally Spherical
   Orientable
Related Polytopes :
   Facet
   Vertex Figure
   Dual
   Petrial
Facet Of :
   {3,18,2} of size 1944
Vertex Figure Of :
   {2,3,18} of size 1944
Quotients (Maximal Quotients in Boldface) :
   3-fold quotients : {3,18}*324
   9-fold quotients : {3,6}*108
   27-fold quotients : {3,6}*36
   81-fold quotients : {3,2}*12
Covers (Minimal Covers in Boldface) :
   2-fold covers : {6,18}*1944k
Permutation Representation (GAP) :

s0 := (10,19)(11,20)(12,21)(13,24)(14,22)(15,23)(16,26)(17,27)(18,25);;
s1 := ( 1,13)( 2,14)( 3,15)( 4,16)( 5,17)( 6,18)( 7,12)( 8,10)( 9,11);;
s2 := ( 2, 3)( 4, 8)( 5, 7)( 6, 9)(11,12)(13,17)(14,16)(15,18)(20,21)(22,26)
(23,25)(24,27);;
poly := Group([s0,s1,s2]);;

Finitely Presented Group Representation (GAP) :

F := FreeGroup("s0","s1","s2");;
s0 := F.1;;  s1 := F.2;;  s2 := F.3;;  
rels := [ s0*s0, s1*s1, s2*s2, s0*s2*s0*s2, s0*s1*s0*s1*s0*s1, 
s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1, 
s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2 ];;
poly := F / rels;;

Permutation Representation (Magma) :

s0 := Sym(27)!(10,19)(11,20)(12,21)(13,24)(14,22)(15,23)(16,26)(17,27)(18,25);
s1 := Sym(27)!( 1,13)( 2,14)( 3,15)( 4,16)( 5,17)( 6,18)( 7,12)( 8,10)( 9,11);
s2 := Sym(27)!( 2, 3)( 4, 8)( 5, 7)( 6, 9)(11,12)(13,17)(14,16)(15,18)(20,21)
(22,26)(23,25)(24,27);
poly := sub<Sym(27)|s0,s1,s2>;

Finitely Presented Group Representation (Magma) :

poly<s0,s1,s2> := Group< s0,s1,s2 | s0*s0, s1*s1, s2*s2, 
s0*s2*s0*s2, s0*s1*s0*s1*s0*s1, s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1, 
s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2 >;

References : None.
to this polytope