include("/home/bitnami/htdocs/websites/abstract-polytopes/www/subs.php"); ?>
Polytope of Type {8,2,2,5}
This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {8,2,2,5}*320
if this polytope has a name.
Group : SmallGroup(320,1426)
Rank : 5
Schlafli Type : {8,2,2,5}
Number of vertices, edges, etc : 8, 8, 2, 5, 5
Order of s0s1s2s3s4 : 40
Order of s0s1s2s3s4s3s2s1 : 2
Special Properties :
Degenerate
Universal
Orientable
Flat
Related Polytopes :
Facet
Vertex Figure
Dual
Facet Of :
{8,2,2,5,2} of size 640
{8,2,2,5,3} of size 1920
{8,2,2,5,5} of size 1920
Vertex Figure Of :
{2,8,2,2,5} of size 640
{4,8,2,2,5} of size 1280
{4,8,2,2,5} of size 1280
{6,8,2,2,5} of size 1920
{3,8,2,2,5} of size 1920
Quotients (Maximal Quotients in Boldface) :
2-fold quotients : {4,2,2,5}*160
4-fold quotients : {2,2,2,5}*80
Covers (Minimal Covers in Boldface) :
2-fold covers : {8,4,2,5}*640a, {16,2,2,5}*640, {8,2,2,10}*640
3-fold covers : {24,2,2,5}*960, {8,6,2,5}*960, {8,2,2,15}*960
4-fold covers : {8,4,2,5}*1280a, {8,8,2,5}*1280b, {8,8,2,5}*1280c, {16,4,2,5}*1280a, {16,4,2,5}*1280b, {32,2,2,5}*1280, {8,4,2,10}*1280a, {8,2,4,10}*1280, {8,2,2,20}*1280, {16,2,2,10}*1280
5-fold covers : {8,2,2,25}*1600, {40,2,2,5}*1600, {8,2,10,5}*1600, {8,10,2,5}*1600
6-fold covers : {8,4,2,15}*1920a, {8,12,2,5}*1920a, {24,4,2,5}*1920a, {16,2,2,15}*1920, {16,6,2,5}*1920, {48,2,2,5}*1920, {8,2,2,30}*1920, {8,2,6,10}*1920, {8,6,2,10}*1920, {24,2,2,10}*1920
Permutation Representation (GAP) :
s0 := (2,3)(4,5)(6,7);;
s1 := (1,2)(3,4)(5,6)(7,8);;
s2 := ( 9,10);;
s3 := (12,13)(14,15);;
s4 := (11,12)(13,14);;
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,
s2*s3*s2*s3, s0*s4*s0*s4, s1*s4*s1*s4,
s2*s4*s2*s4, s3*s4*s3*s4*s3*s4*s3*s4*s3*s4,
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1 ];;
poly := F / rels;;
Permutation Representation (Magma) :
s0 := Sym(15)!(2,3)(4,5)(6,7);
s1 := Sym(15)!(1,2)(3,4)(5,6)(7,8);
s2 := Sym(15)!( 9,10);
s3 := Sym(15)!(12,13)(14,15);
s4 := Sym(15)!(11,12)(13,14);
poly := sub<Sym(15)|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, s2*s3*s2*s3,
s0*s4*s0*s4, s1*s4*s1*s4, s2*s4*s2*s4,
s3*s4*s3*s4*s3*s4*s3*s4*s3*s4, s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1 >;
to this polytope