Polytope of Type {6,4,2,7}

This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {6,4,2,7}*672b
if this polytope has a name.
Group : SmallGroup(672,1260)
Rank : 5
Schlafli Type : {6,4,2,7}
Number of vertices, edges, etc : 6, 12, 4, 7, 7
Order of s₀s₁s₂s₃s₄ : 21
Order of s₀s₁s₂s₃s₄s₃s₂s₁ : 2
Special Properties :
   Degenerate
   Universal
   Non-Orientable
   Flat
Related Polytopes :
   Facet
   Vertex Figure
   Dual
Facet Of :
   {6,4,2,7,2} of size 1344
Vertex Figure Of :
   {2,6,4,2,7} of size 1344
Quotients (Maximal Quotients in Boldface) :
   2-fold quotients : {3,4,2,7}*336
Covers (Minimal Covers in Boldface) :
   2-fold covers : {6,4,2,7}*1344, {6,4,2,14}*1344b
Permutation Representation (GAP) :

s0 := (1,4)(2,6);;
s1 := (1,2)(3,4)(5,6);;
s2 := (3,5);;
s3 := ( 8, 9)(10,11)(12,13);;
s4 := ( 7, 8)( 9,10)(11,12);;
poly := Group([s0,s1,s2,s3,s4]);;

Finitely Presented Group Representation (GAP) :

F := FreeGroup("s0","s1","s2","s3","s4");;
s0 := F.1;;  s1 := F.2;;  s2 := F.3;;  s3 := F.4;;  s4 := F.5;;  
rels := [ s0*s0, s1*s1, s2*s2, s3*s3, s4*s4, s0*s2*s0*s2, 
s0*s3*s0*s3, s1*s3*s1*s3, s2*s3*s2*s3, 
s0*s4*s0*s4, s1*s4*s1*s4, s2*s4*s2*s4, 
s1*s2*s1*s2*s1*s2*s1*s2, s0*s1*s2*s0*s1*s2*s0*s1*s2, 
s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4 ];;
poly := F / rels;;

Permutation Representation (Magma) :

s0 := Sym(13)!(1,4)(2,6);
s1 := Sym(13)!(1,2)(3,4)(5,6);
s2 := Sym(13)!(3,5);
s3 := Sym(13)!( 8, 9)(10,11)(12,13);
s4 := Sym(13)!( 7, 8)( 9,10)(11,12);
poly := sub<Sym(13)|s0,s1,s2,s3,s4>;

Finitely Presented Group Representation (Magma) :

poly<s0,s1,s2,s3,s4> := Group< s0,s1,s2,s3,s4 | s0*s0, s1*s1, s2*s2, 
s3*s3, s4*s4, s0*s2*s0*s2, s0*s3*s0*s3, 
s1*s3*s1*s3, s2*s3*s2*s3, s0*s4*s0*s4, 
s1*s4*s1*s4, s2*s4*s2*s4, s1*s2*s1*s2*s1*s2*s1*s2, 
s0*s1*s2*s0*s1*s2*s0*s1*s2, s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4 >;

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