Part of the Atlas of Small Regular Polytopes

Polytope of Type {12,20}

Atlas Canonical Name {12,20}*1920l

▶ Play as a twisty puzzle

Overview

Group
SmallGroup(1920,240875)
Rank
3
Schläfli Type
{12,20}
Vertices, edges, …
48, 480, 80
Order of s0s1s2
20
Order of s0s1s2s1
20
Also known as
if this polytope has a name.

Special Properties

  • Compact Hyperbolic Quotient
  • Locally Spherical
  • Orientable

Quotients maximal quotients in bold

2-fold

4-fold

8-fold

16-fold

32-fold

120-fold

240-fold

Covers minimal covers in bold

None in this atlas.

Irregular Quotients of which this is a minimal cover

None.

Representations

Permutation Representation (GAP)
s0 := ( 1,23)( 2,41)( 3,42)( 4,37)( 5,30)( 6,34)( 7,28)( 8,36)( 9,24)(10,29)(11,16)(12,38)(13,14)(15,44)(17,21)(18,19)(20,45)(22,32)(25,27)(26,39)(31,35)(33,47)(40,48)(43,46)(51,52);;
s1 := ( 1,12)( 2,35)( 3, 4)( 5,44)( 6,40)( 7,43)( 8,45)( 9,46)(10,48)(11,31)(13,36)(14,15)(16,42)(17,37)(18,30)(19,20)(21,41)(22,47)(23,39)(24,29)(25,38)(26,32)(27,33)(28,34)(49,52)(50,51);;
s2 := ( 2,38)( 3,32)( 4,46)( 5,29)( 6,21)( 7,36)( 8,28)( 9,16)(10,30)(11,24)(12,41)(15,20)(17,34)(22,42)(25,26)(27,39)(31,48)(35,40)(37,43)(44,45);;
poly := Group([s0,s1,s2]);;
Finitely Presented Group Representation (GAP)
F := FreeGroup("s0","s1","s2");;
s0 := F.1;;  s1 := F.2;;  s2 := F.3;;  
rels := [ s0*s0, s1*s1, s2*s2, s0*s2*s0*s2, s0*s1*s0*s1*s2*s1*s0*s1*s0*s1*s2*s1, 
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1, 
s1*s0*s1*s2*s0*s1*s2*s1*s2*s1*s2*s1*s2*s1*s0*s1*s0*s2*s1*s2*s1*s2*s1*s2*s1*s2, 
s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s1*s2*s0*s1 ];;
poly := F / rels;;
Permutation Representation (Magma)
s0 := Sym(52)!( 1,23)( 2,41)( 3,42)( 4,37)( 5,30)( 6,34)( 7,28)( 8,36)( 9,24)(10,29)(11,16)(12,38)(13,14)(15,44)(17,21)(18,19)(20,45)(22,32)(25,27)(26,39)(31,35)(33,47)(40,48)(43,46)(51,52);
s1 := Sym(52)!( 1,12)( 2,35)( 3, 4)( 5,44)( 6,40)( 7,43)( 8,45)( 9,46)(10,48)(11,31)(13,36)(14,15)(16,42)(17,37)(18,30)(19,20)(21,41)(22,47)(23,39)(24,29)(25,38)(26,32)(27,33)(28,34)(49,52)(50,51);
s2 := Sym(52)!( 2,38)( 3,32)( 4,46)( 5,29)( 6,21)( 7,36)( 8,28)( 9,16)(10,30)(11,24)(12,41)(15,20)(17,34)(22,42)(25,26)(27,39)(31,48)(35,40)(37,43)(44,45);
poly := sub<Sym(52)|s0,s1,s2>;
Finitely Presented Group Representation (Magma)
poly<s0,s1,s2> := Group< s0,s1,s2 | s0*s0, s1*s1, s2*s2, 
s0*s2*s0*s2, s0*s1*s0*s1*s2*s1*s0*s1*s0*s1*s2*s1, 
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1, 
s1*s0*s1*s2*s0*s1*s2*s1*s2*s1*s2*s1*s2*s1*s0*s1*s0*s2*s1*s2*s1*s2*s1*s2*s1*s2, 
s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s1*s2*s0*s1 >; 

References

None.

to this polytope.

Twisty Puzzle