Polytope of Type {2,2,7,2,2,4}
This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {2,2,7,2,2,4}*896
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Group : SmallGroup(896,19315)
Rank : 7
Schlafli Type : {2,2,7,2,2,4}
Number of vertices, edges, etc : 2, 2, 7, 7, 2, 4, 4
Order of s0s1s2s3s4s5s6 : 28
Order of s0s1s2s3s4s5s6s5s4s3s2s1 : 2
Special Properties :
Degenerate
Universal
Orientable
Flat
Related Polytopes :
Facet
Vertex Figure
Dual
Facet Of :
{2,2,7,2,2,4,2} of size 1792
Vertex Figure Of :
{2,2,2,7,2,2,4} of size 1792
Quotients (Maximal Quotients in Boldface) :
2-fold quotients : {2,2,7,2,2,2}*448
Covers (Minimal Covers in Boldface) :
2-fold covers : {2,2,7,2,4,4}*1792, {4,2,7,2,2,4}*1792, {2,2,7,2,2,8}*1792, {2,2,14,2,2,4}*1792
Permutation Representation (GAP) :
s0 := (1,2);;
s1 := (3,4);;
s2 := ( 6, 7)( 8, 9)(10,11);;
s3 := ( 5, 6)( 7, 8)( 9,10);;
s4 := (12,13);;
s5 := (15,16);;
s6 := (14,15)(16,17);;
poly := Group([s0,s1,s2,s3,s4,s5,s6]);;
Finitely Presented Group Representation (GAP) :
F := FreeGroup("s0","s1","s2","s3","s4","s5","s6");;
s0 := F.1;; s1 := F.2;; s2 := F.3;; s3 := F.4;; s4 := F.5;; s5 := F.6;; s6 := F.7;;
rels := [ s0*s0, s1*s1, s2*s2, s3*s3, s4*s4, s5*s5,
s6*s6, s0*s1*s0*s1, s0*s2*s0*s2, s1*s2*s1*s2,
s0*s3*s0*s3, s1*s3*s1*s3, s0*s4*s0*s4,
s1*s4*s1*s4, s2*s4*s2*s4, s3*s4*s3*s4,
s0*s5*s0*s5, s1*s5*s1*s5, s2*s5*s2*s5,
s3*s5*s3*s5, s4*s5*s4*s5, s0*s6*s0*s6,
s1*s6*s1*s6, s2*s6*s2*s6, s3*s6*s3*s6,
s4*s6*s4*s6, s5*s6*s5*s6*s5*s6*s5*s6,
s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3 ];;
poly := F / rels;;
Permutation Representation (Magma) :
s0 := Sym(17)!(1,2);
s1 := Sym(17)!(3,4);
s2 := Sym(17)!( 6, 7)( 8, 9)(10,11);
s3 := Sym(17)!( 5, 6)( 7, 8)( 9,10);
s4 := Sym(17)!(12,13);
s5 := Sym(17)!(15,16);
s6 := Sym(17)!(14,15)(16,17);
poly := sub<Sym(17)|s0,s1,s2,s3,s4,s5,s6>;
Finitely Presented Group Representation (Magma) :
poly<s0,s1,s2,s3,s4,s5,s6> := Group< s0,s1,s2,s3,s4,s5,s6 | s0*s0, s1*s1, s2*s2,
s3*s3, s4*s4, s5*s5, s6*s6, s0*s1*s0*s1,
s0*s2*s0*s2, s1*s2*s1*s2, s0*s3*s0*s3,
s1*s3*s1*s3, s0*s4*s0*s4, s1*s4*s1*s4,
s2*s4*s2*s4, s3*s4*s3*s4, s0*s5*s0*s5,
s1*s5*s1*s5, s2*s5*s2*s5, s3*s5*s3*s5,
s4*s5*s4*s5, s0*s6*s0*s6, s1*s6*s1*s6,
s2*s6*s2*s6, s3*s6*s3*s6, s4*s6*s4*s6,
s5*s6*s5*s6*s5*s6*s5*s6, s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3 >;
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