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

Small Group ID = [648,555], hypertope number 4.

• Structure of Group

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

• Generators of Automorphism Group (Permutation Representation for GAP)

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

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

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

r3 := (1,3)(2,6)(4,5)(7,11)(8,13)(9,14)(10,16)(12,18)(15,17);

• Finitely Presented Group Representation (GAP)

F := FreeGroup(4);

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

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

• Number of Elements of each type

type 0: 18 elements

type 1: 81 elements

type 2: 9 elements

type 3: 6 elements

• Order of r₀ r₁ r₂ r₃ : 6

• This hypertope does not have non-degenerate leaves