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Polytope of Type {18,6,4}
This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {18,6,4}*1296c
if this polytope has a name.
Group : SmallGroup(1296,1785)
Rank : 4
Schlafli Type : {18,6,4}
Number of vertices, edges, etc : 27, 81, 18, 4
Order of s0s1s2s3 : 9
Order of s0s1s2s3s2s1 : 2
Special Properties :
Universal
Non-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) :
3-fold quotients : {6,6,4}*432
Covers (Minimal Covers in Boldface) :
None in this atlas.
Permutation Representation (GAP) :
s0 := ( 5, 9)( 6, 10)( 7, 11)( 8, 12)( 13, 25)( 14, 26)( 15, 27)( 16, 28)
( 17, 33)( 18, 34)( 19, 35)( 20, 36)( 21, 29)( 22, 30)( 23, 31)( 24, 32)
( 37, 97)( 38, 98)( 39, 99)( 40,100)( 41,105)( 42,106)( 43,107)( 44,108)
( 45,101)( 46,102)( 47,103)( 48,104)( 49, 85)( 50, 86)( 51, 87)( 52, 88)
( 53, 93)( 54, 94)( 55, 95)( 56, 96)( 57, 89)( 58, 90)( 59, 91)( 60, 92)
( 61, 73)( 62, 74)( 63, 75)( 64, 76)( 65, 81)( 66, 82)( 67, 83)( 68, 84)
( 69, 77)( 70, 78)( 71, 79)( 72, 80);;
s1 := ( 1, 37)( 2, 38)( 3, 40)( 4, 39)( 5, 41)( 6, 42)( 7, 44)( 8, 43)
( 9, 45)( 10, 46)( 11, 48)( 12, 47)( 13, 61)( 14, 62)( 15, 64)( 16, 63)
( 17, 65)( 18, 66)( 19, 68)( 20, 67)( 21, 69)( 22, 70)( 23, 72)( 24, 71)
( 25, 49)( 26, 50)( 27, 52)( 28, 51)( 29, 53)( 30, 54)( 31, 56)( 32, 55)
( 33, 57)( 34, 58)( 35, 60)( 36, 59)( 73, 97)( 74, 98)( 75,100)( 76, 99)
( 77,101)( 78,102)( 79,104)( 80,103)( 81,105)( 82,106)( 83,108)( 84,107)
( 87, 88)( 91, 92)( 95, 96);;
s2 := ( 2, 4)( 5, 9)( 6, 12)( 7, 11)( 8, 10)( 14, 16)( 17, 21)( 18, 24)
( 19, 23)( 20, 22)( 26, 28)( 29, 33)( 30, 36)( 31, 35)( 32, 34)( 37, 41)
( 38, 44)( 39, 43)( 40, 42)( 46, 48)( 49, 53)( 50, 56)( 51, 55)( 52, 54)
( 58, 60)( 61, 65)( 62, 68)( 63, 67)( 64, 66)( 70, 72)( 73, 81)( 74, 84)
( 75, 83)( 76, 82)( 78, 80)( 85, 93)( 86, 96)( 87, 95)( 88, 94)( 90, 92)
( 97,105)( 98,108)( 99,107)(100,106)(102,104);;
s3 := ( 1, 2)( 3, 4)( 5, 6)( 7, 8)( 9, 10)( 11, 12)( 13, 14)( 15, 16)
( 17, 18)( 19, 20)( 21, 22)( 23, 24)( 25, 26)( 27, 28)( 29, 30)( 31, 32)
( 33, 34)( 35, 36)( 37, 38)( 39, 40)( 41, 42)( 43, 44)( 45, 46)( 47, 48)
( 49, 50)( 51, 52)( 53, 54)( 55, 56)( 57, 58)( 59, 60)( 61, 62)( 63, 64)
( 65, 66)( 67, 68)( 69, 70)( 71, 72)( 73, 74)( 75, 76)( 77, 78)( 79, 80)
( 81, 82)( 83, 84)( 85, 86)( 87, 88)( 89, 90)( 91, 92)( 93, 94)( 95, 96)
( 97, 98)( 99,100)(101,102)(103,104)(105,106)(107,108);;
poly := Group([s0,s1,s2,s3]);;
Finitely Presented Group Representation (GAP) :
F := FreeGroup("s0","s1","s2","s3");;
s0 := F.1;; s1 := F.2;; s2 := F.3;; s3 := F.4;;
rels := [ s0*s0, s1*s1, s2*s2, s3*s3, s0*s2*s0*s2,
s0*s3*s0*s3, s1*s3*s1*s3, s2*s3*s2*s3*s2*s3*s2*s3,
s3*s2*s1*s3*s2*s3*s2*s1*s2, s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2,
s0*s1*s2*s1*s0*s1*s2*s1*s2*s1*s0*s1*s2*s1*s0*s1,
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s0*s1 ];;
poly := F / rels;;
Permutation Representation (Magma) :
s0 := Sym(108)!( 5, 9)( 6, 10)( 7, 11)( 8, 12)( 13, 25)( 14, 26)( 15, 27)
( 16, 28)( 17, 33)( 18, 34)( 19, 35)( 20, 36)( 21, 29)( 22, 30)( 23, 31)
( 24, 32)( 37, 97)( 38, 98)( 39, 99)( 40,100)( 41,105)( 42,106)( 43,107)
( 44,108)( 45,101)( 46,102)( 47,103)( 48,104)( 49, 85)( 50, 86)( 51, 87)
( 52, 88)( 53, 93)( 54, 94)( 55, 95)( 56, 96)( 57, 89)( 58, 90)( 59, 91)
( 60, 92)( 61, 73)( 62, 74)( 63, 75)( 64, 76)( 65, 81)( 66, 82)( 67, 83)
( 68, 84)( 69, 77)( 70, 78)( 71, 79)( 72, 80);
s1 := Sym(108)!( 1, 37)( 2, 38)( 3, 40)( 4, 39)( 5, 41)( 6, 42)( 7, 44)
( 8, 43)( 9, 45)( 10, 46)( 11, 48)( 12, 47)( 13, 61)( 14, 62)( 15, 64)
( 16, 63)( 17, 65)( 18, 66)( 19, 68)( 20, 67)( 21, 69)( 22, 70)( 23, 72)
( 24, 71)( 25, 49)( 26, 50)( 27, 52)( 28, 51)( 29, 53)( 30, 54)( 31, 56)
( 32, 55)( 33, 57)( 34, 58)( 35, 60)( 36, 59)( 73, 97)( 74, 98)( 75,100)
( 76, 99)( 77,101)( 78,102)( 79,104)( 80,103)( 81,105)( 82,106)( 83,108)
( 84,107)( 87, 88)( 91, 92)( 95, 96);
s2 := Sym(108)!( 2, 4)( 5, 9)( 6, 12)( 7, 11)( 8, 10)( 14, 16)( 17, 21)
( 18, 24)( 19, 23)( 20, 22)( 26, 28)( 29, 33)( 30, 36)( 31, 35)( 32, 34)
( 37, 41)( 38, 44)( 39, 43)( 40, 42)( 46, 48)( 49, 53)( 50, 56)( 51, 55)
( 52, 54)( 58, 60)( 61, 65)( 62, 68)( 63, 67)( 64, 66)( 70, 72)( 73, 81)
( 74, 84)( 75, 83)( 76, 82)( 78, 80)( 85, 93)( 86, 96)( 87, 95)( 88, 94)
( 90, 92)( 97,105)( 98,108)( 99,107)(100,106)(102,104);
s3 := Sym(108)!( 1, 2)( 3, 4)( 5, 6)( 7, 8)( 9, 10)( 11, 12)( 13, 14)
( 15, 16)( 17, 18)( 19, 20)( 21, 22)( 23, 24)( 25, 26)( 27, 28)( 29, 30)
( 31, 32)( 33, 34)( 35, 36)( 37, 38)( 39, 40)( 41, 42)( 43, 44)( 45, 46)
( 47, 48)( 49, 50)( 51, 52)( 53, 54)( 55, 56)( 57, 58)( 59, 60)( 61, 62)
( 63, 64)( 65, 66)( 67, 68)( 69, 70)( 71, 72)( 73, 74)( 75, 76)( 77, 78)
( 79, 80)( 81, 82)( 83, 84)( 85, 86)( 87, 88)( 89, 90)( 91, 92)( 93, 94)
( 95, 96)( 97, 98)( 99,100)(101,102)(103,104)(105,106)(107,108);
poly := sub<Sym(108)|s0,s1,s2,s3>;
Finitely Presented Group Representation (Magma) :
poly<s0,s1,s2,s3> := Group< s0,s1,s2,s3 | s0*s0, s1*s1, s2*s2,
s3*s3, s0*s2*s0*s2, s0*s3*s0*s3, s1*s3*s1*s3,
s2*s3*s2*s3*s2*s3*s2*s3, s3*s2*s1*s3*s2*s3*s2*s1*s2,
s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2,
s0*s1*s2*s1*s0*s1*s2*s1*s2*s1*s0*s1*s2*s1*s0*s1,
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s0*s1 >;
References : None.
to this polytope