Rank 4 Star diagram with parameters (a,b,c) = (6,3,6)

Small Group ID = [648,555], hypertope number 1.

• Structure of Group

(((C3 x C3) : C3) : (C2 x C2)) x S3

• Generators of Automorphism Group (Permutation Representation for GAP)

r0 := (1,2)(3,7)(4,6)(5,9)(8,13)(10,14)(11,15)(12,17)(16,18);

r1 := (1,3)(2,5)(4,10)(6,12)(7,9)(8,14)(11,17)(13,16)(15,18);

r2 := (1,4)(2,6)(3,8)(5,11)(7,13)(9,15)(10,14)(12,17)(16,18);

r3 := (3,9)(5,7)(8,15)(10,16)(11,13)(14,18);

• Finitely Presented Group Representation (GAP)

F := FreeGroup(4);

r0 := F.1;; r1 := F.2;; r2 := F.3;; r3 := F.4;;

G := F/[ r3^2, r0^2, r1^2, r2^2, (r0*r3)^2, (r2*r0)^2, (r0*r2*r3)^2, (r1*r2)^3, (r0*r1*r0*r3*r1)^2, (r1*r0*r1*r2*r0)^2, r0*r1*r0*(r1*r0*r1*r3)^2*r1, (r1*r3)^6, (r0*r2*r1*r3*r1*r2*r0*(r3*r1)^2)^2 ];;

• Number of Elements of each type

type 0: 6 elements

type 1: 81 elements

type 2: 9 elements

type 3: 18 elements

• Order of r₀ r₁ r₂ r₃ : 6

• This hypertope does not have non-degenerate leaves