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Polytope of Type {2,8,2,20}
This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {2,8,2,20}*1280
if this polytope has a name.
Group : SmallGroup(1280,1044762)
Rank : 5
Schlafli Type : {2,8,2,20}
Number of vertices, edges, etc : 2, 8, 8, 20, 20
Order of s0s1s2s3s4 : 40
Order of s0s1s2s3s4s3s2s1 : 2
Special Properties :
Degenerate
Universal
Orientable
Flat
Related Polytopes :
Facet
Vertex Figure
Dual
Facet Of :
None in this Atlas
Vertex Figure Of :
None in this Atlas
Quotients (Maximal Quotients in Boldface) :
2-fold quotients : {2,4,2,20}*640, {2,8,2,10}*640
4-fold quotients : {2,8,2,5}*320, {2,2,2,20}*320, {2,4,2,10}*320
5-fold quotients : {2,8,2,4}*256
8-fold quotients : {2,4,2,5}*160, {2,2,2,10}*160
10-fold quotients : {2,4,2,4}*128, {2,8,2,2}*128
16-fold quotients : {2,2,2,5}*80
20-fold quotients : {2,2,2,4}*64, {2,4,2,2}*64
40-fold quotients : {2,2,2,2}*32
Covers (Minimal Covers in Boldface) :
None in this atlas.
Permutation Representation (GAP) :
s0 := (1,2);;
s1 := (4,5)(6,7)(8,9);;
s2 := ( 3, 4)( 5, 6)( 7, 8)( 9,10);;
s3 := (12,13)(14,15)(17,20)(18,19)(21,22)(23,24)(25,28)(26,27)(29,30);;
s4 := (11,17)(12,14)(13,23)(15,25)(16,19)(18,21)(20,29)(22,26)(24,27)(28,30);;
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*s1*s0*s1,
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*s1*s2*s1*s2*s1*s2*s1*s2,
s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4 ];;
poly := F / rels;;
Permutation Representation (Magma) :
s0 := Sym(30)!(1,2);
s1 := Sym(30)!(4,5)(6,7)(8,9);
s2 := Sym(30)!( 3, 4)( 5, 6)( 7, 8)( 9,10);
s3 := Sym(30)!(12,13)(14,15)(17,20)(18,19)(21,22)(23,24)(25,28)(26,27)(29,30);
s4 := Sym(30)!(11,17)(12,14)(13,23)(15,25)(16,19)(18,21)(20,29)(22,26)(24,27)
(28,30);
poly := sub<Sym(30)|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*s1*s0*s1, 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*s1*s2*s1*s2*s1*s2*s1*s2,
s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4*s3*s4 >;
to this polytope