Chiral Polytope of Type {18,6}
This page is part of the Atlas of Small Chiral Polytopes
Regular Cover :{18,6}*1944m with group SmallGroup(1944,2340) = ((C3 x C9) ⋊ D6) x S3of order 1944
Rank : 3
Schlafli Type : {18,6}
Rotation Group : SmallGroup(324,118) = (C9 ⋊ C6) x S3 of order 324
Number of vertices, edges, etc : 54, 162, 18
If Aut({18,6}*1944m)=<s0, s1, s2>, then this chiral polytope is ({18,6}*1944m)/N, where
N=<s0*s1*s0*s1*s0*s1*s0*s1*s2*s1*s2*s1*s0*s1*s0*s2*s1*s2> of order 3
Facet : (Regular) 18-gon
Vertex Figure : (Regular) 6-gon
Finitely Presented Group Representation of the Rotation Group(GAP) :
F := FreeGroup("sig1","sig2");;
sig1 := F.1;; sig2 := F.2;;
rels := [ sig1^-1*sig2^-1*sig1^-1*sig2^-1, sig2*sig2*sig2*sig2*sig2*sig2, sig1*sig1*sig2^-1*sig2^-1*sig1*sig1*sig2*sig2*sig1*sig1 ];;
rotpoly := F / rels;;
Finitely Presented Group Representation of the Rotation Group (Magma) :
rotpoly<sig1,sig2> := Group< sig1,sig2 | sig1^-1*sig2^-1*sig1^-1*sig2^-1, sig2*sig2*sig2*sig2*sig2*sig2,
sig1*sig1*sig2^-1*sig2^-1*sig1*sig1*sig2*sig2*sig1*sig1 >;