Rank 4 Tail-triangle diagram with parameters (a,b,c,d) = (3,6,6,6)

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)(5,7)(8,10)(11,13)(14,15)(17,18);

r1 := (1,2)(5,7)(6,8)(11,13)(12,15)(16,17);

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

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

• 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, (r3*r0)^2, (r2*r0)^2, (r1*r0)^3, (r3*r1*r0*r3*r1)^2, r2*r1*r3*r0*(r1*r2)^2*r3*r2*r0*r1, (r3*r2)^6, r3*r0*r2*r3*r1*(r3*r2)^2*r0*r1*r0*r2*r1 ];;

• Number of Elements of each type

type 0: 3 elements

type 1: 27 elements

type 2: 18 elements

type 3: 18 elements

• Order of r₀ r₁ r₂ r₃ : 6

• This hypertope does not have non-degenerate leaves