include("/home/bitnami/htdocs/websites/abstract-polytopes/www/subs.php"); ?>
Polytope of Type {8,2,7,2}
This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {8,2,7,2}*448
if this polytope has a name.
Group : SmallGroup(448,1207)
Rank : 5
Schlafli Type : {8,2,7,2}
Number of vertices, edges, etc : 8, 8, 7, 7, 2
Order of s0s1s2s3s4 : 56
Order of s0s1s2s3s4s3s2s1 : 2
Special Properties :
Degenerate
Universal
Orientable
Flat
Related Polytopes :
Facet
Vertex Figure
Dual
Facet Of :
{8,2,7,2,2} of size 896
{8,2,7,2,3} of size 1344
{8,2,7,2,4} of size 1792
Vertex Figure Of :
{2,8,2,7,2} of size 896
{4,8,2,7,2} of size 1792
{4,8,2,7,2} of size 1792
Quotients (Maximal Quotients in Boldface) :
2-fold quotients : {4,2,7,2}*224
4-fold quotients : {2,2,7,2}*112
Covers (Minimal Covers in Boldface) :
2-fold covers : {16,2,7,2}*896, {8,2,14,2}*896
3-fold covers : {24,2,7,2}*1344, {8,2,21,2}*1344
4-fold covers : {32,2,7,2}*1792, {8,4,14,2}*1792a, {8,2,14,4}*1792, {8,2,28,2}*1792, {16,2,14,2}*1792
Permutation Representation (GAP) :
s0 := (2,3)(4,5)(6,7);;
s1 := (1,2)(3,4)(5,6)(7,8);;
s2 := (10,11)(12,13)(14,15);;
s3 := ( 9,10)(11,12)(13,14);;
s4 := (16,17);;
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,
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, s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3,
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1 ];;
poly := F / rels;;
Permutation Representation (Magma) :
s0 := Sym(17)!(2,3)(4,5)(6,7);
s1 := Sym(17)!(1,2)(3,4)(5,6)(7,8);
s2 := Sym(17)!(10,11)(12,13)(14,15);
s3 := Sym(17)!( 9,10)(11,12)(13,14);
s4 := Sym(17)!(16,17);
poly := sub<Sym(17)|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, 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,
s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3*s2*s3,
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1 >;
to this polytope