Part of the Atlas of Small Regular Polytopes

Polytope of Type {4,18}

Atlas Canonical Name {4,18}*1296b

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Overview

Group
SmallGroup(1296,2908)
Rank
3
Schläfli Type
{4,18}
Vertices, edges, …
36, 324, 162
Order of s0s1s2
36
Order of s0s1s2s1
6
Also known as
if this polytope has a name.

Special Properties

  • Compact Hyperbolic Quotient
  • Locally Spherical
  • Orientable

Quotients maximal quotients in bold

3-fold

9-fold

18-fold

27-fold

36-fold

54-fold

81-fold

108-fold

162-fold

Covers minimal covers in bold

None in this atlas.

Irregular Quotients of which this is a minimal cover

Click an entry to reveal its facets and vertex figures.

P/N, where N=<(s0*s1)^2> of order 2

90 facets

18 vertex figures

P/N, where N=<s2*s1*s0*(s2*s1)^3*s0*(s2*s1)^4*s2> of order 2

81 facets

18 vertex figures

P/N, where N=<s1*s2*s1*s0*(s2*s1)^3*s0*(s2*s1)^4*s2> of order 2

81 facets

21 vertex figures

P/N, where N=<(s1*s0*s1*s2)^2> of order 3

54 facets

12 vertex figures

P/N, where N=<s0*s1*s0*s2*s1*s0*(s1*s2)^2*s1*s0*s1*s2> of order 3

54 facets

12 vertex figures

P/N, where N=<s0*s1*s0*s2*s1*s0*(s2*s1)^3*s0*s2*s1*s2> of order 3

54 facets

12 vertex figures

P/N, where N=<s1*s0*(s2*s1)^2*s0*(s2*s1)^3*s2> of order 3

54 facets

12 vertex figures

P/N, where N=<(s0*s1)^2, s1*s2*s1*s0*(s2*s1)^3*s0*(s2*s1)^4*s2> of order 4

45 facets

12 vertex figures

P/N, where N=<(s0*s1)^2*(s2*s1*s0)^2*(s1*s2)^2, s0*(s1*s2)^2*s1*s0*(s2*s1)^6*s2> of order 6

27 facets

9 vertex figures

P/N, where N=<(s0*s1)^2, (s0*s2*s1)^2*s0*s1*s2*s1*s0*s2> of order 6

36 facets

6 vertex figures

P/N, where N=<(s0*s1)^2, s0*s2*s1*s0*s1*s2> of order 6

36 facets

6 vertex figures

P/N, where N=<s0*s1*s0*s2*s1*s0*(s1*s2)^2*s1*s0*s1*s2, s0*s1*s2*s1*s0*(s2*s1)^4*s2> of order 9

18 facets

4 vertex figures

P/N, where N=<(s0*s1*s2*s1)^2, s1*s0*(s2*s1)^4*s0*s2*s1*s2> of order 9

18 facets

4 vertex figures

P/N, where N=<(s0*s1)^2, (s0*s2*s1)^2*s0*s1*s2*s1*s0*s2, (s1*s2)^9> of order 12

18 facets

5 vertex figures

Representations

Permutation Representation (GAP)
s0 := (10,28)(11,29)(12,30)(13,31)(14,32)(15,33)(16,34)(17,35)(18,36)(19,55)(20,56)(21,57)(22,58)(23,59)(24,60)(25,61)(26,62)(27,63)(46,64)(47,65)(48,66)(49,67)(50,68)(51,69)(52,70)(53,71)(54,72);;
s1 := ( 2, 3)( 4, 8)( 5, 7)( 6, 9)(11,12)(13,17)(14,16)(15,18)(20,21)(22,26)(23,25)(24,27)(28,55)(29,57)(30,56)(31,62)(32,61)(33,63)(34,59)(35,58)(36,60)(37,64)(38,66)(39,65)(40,71)(41,70)(42,72)(43,68)(44,67)(45,69)(46,73)(47,75)(48,74)(49,80)(50,79)(51,81)(52,77)(53,76)(54,78);;
s2 := ( 1,40)( 2,42)( 3,41)( 4,37)( 5,39)( 6,38)( 7,44)( 8,43)( 9,45)(10,31)(11,33)(12,32)(13,28)(14,30)(15,29)(16,35)(17,34)(18,36)(19,49)(20,51)(21,50)(22,46)(23,48)(24,47)(25,53)(26,52)(27,54)(55,67)(56,69)(57,68)(58,64)(59,66)(60,65)(61,71)(62,70)(63,72)(73,76)(74,78)(75,77)(79,80);;
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*s0*s1*s0*s1, 
s0*s1*s2*s1*s2*s0*s1*s2*s1*s0*s1*s2*s1*s2*s0*s1*s2*s1, 
s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1, 
s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2 ];;
poly := F / rels;;
Permutation Representation (Magma)
s0 := Sym(81)!(10,28)(11,29)(12,30)(13,31)(14,32)(15,33)(16,34)(17,35)(18,36)(19,55)(20,56)(21,57)(22,58)(23,59)(24,60)(25,61)(26,62)(27,63)(46,64)(47,65)(48,66)(49,67)(50,68)(51,69)(52,70)(53,71)(54,72);
s1 := Sym(81)!( 2, 3)( 4, 8)( 5, 7)( 6, 9)(11,12)(13,17)(14,16)(15,18)(20,21)(22,26)(23,25)(24,27)(28,55)(29,57)(30,56)(31,62)(32,61)(33,63)(34,59)(35,58)(36,60)(37,64)(38,66)(39,65)(40,71)(41,70)(42,72)(43,68)(44,67)(45,69)(46,73)(47,75)(48,74)(49,80)(50,79)(51,81)(52,77)(53,76)(54,78);
s2 := Sym(81)!( 1,40)( 2,42)( 3,41)( 4,37)( 5,39)( 6,38)( 7,44)( 8,43)( 9,45)(10,31)(11,33)(12,32)(13,28)(14,30)(15,29)(16,35)(17,34)(18,36)(19,49)(20,51)(21,50)(22,46)(23,48)(24,47)(25,53)(26,52)(27,54)(55,67)(56,69)(57,68)(58,64)(59,66)(60,65)(61,71)(62,70)(63,72)(73,76)(74,78)(75,77)(79,80);
poly := sub<Sym(81)|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*s0*s1*s0*s1, 
s0*s1*s2*s1*s2*s0*s1*s2*s1*s0*s1*s2*s1*s2*s0*s1*s2*s1, 
s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1, 
s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2 >; 

References

None.

to this polytope.

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