Polytope of Type {42,8}

Play with this polytope as a twisty puzzle

This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {42,8}*1344a
if this polytope has a name.
Group : SmallGroup(1344,6454)
Rank : 3
Schlafli Type : {42,8}
Number of vertices, edges, etc : 84, 336, 16
Order of s0s1s2 : 21
Order of s0s1s2s1 : 8
Special Properties :
   Compact Hyperbolic Quotient
   Locally Spherical
   Non-Orientable
Related Polytopes :
   Facet
   Vertex Figure
   Dual
   Petrial
Facet Of :
   None in this Atlas
Vertex Figure Of :
   None in this Atlas
Quotients (Maximal Quotients in Boldface) :
   4-fold quotients : {42,4}*336c
   7-fold quotients : {6,8}*192a
   8-fold quotients : {21,4}*168
   28-fold quotients : {6,4}*48b
   56-fold quotients : {3,4}*24
Covers (Minimal Covers in Boldface) :
   None in this atlas.
Irregular Quotients (of which this is a minimal cover):
   P/N, where N=<s1*s0*s1*s0*s1*s2*s1*s0*s1*s0*s1*s2> of order 2.
      8 facets:
         8 of {42}*84
      56 vertex figures:
         28 of {8}*16
         28 of {4}*8

Permutation Representation (GAP) : 
s0 := (  3,  4)(  5,  6)(  9, 13)( 10, 14)( 11, 16)( 12, 15)( 17, 97)( 18, 98)( 19,100)( 20, 99)( 21,102)( 22,101)( 23,103)( 24,104)( 25,109)( 26,110)( 27,112)( 28,111)( 29,105)( 30,106)( 31,108)( 32,107)( 33, 81)( 34, 82)( 35, 84)( 36, 83)( 37, 86)( 38, 85)( 39, 87)( 40, 88)( 41, 93)( 42, 94)( 43, 96)( 44, 95)( 45, 89)( 46, 90)( 47, 92)( 48, 91)( 49, 65)( 50, 66)( 51, 68)( 52, 67)( 53, 70)( 54, 69)( 55, 71)( 56, 72)( 57, 77)( 58, 78)( 59, 80)( 60, 79)( 61, 73)( 62, 74)( 63, 76)( 64, 75);;
s1 := (  1, 17)(  2, 20)(  3, 19)(  4, 18)(  5, 31)(  6, 30)(  7, 29)(  8, 32)(  9, 27)( 10, 26)( 11, 25)( 12, 28)( 13, 23)( 14, 22)( 15, 21)( 16, 24)( 33, 97)( 34,100)( 35, 99)( 36, 98)( 37,111)( 38,110)( 39,109)( 40,112)( 41,107)( 42,106)( 43,105)( 44,108)( 45,103)( 46,102)( 47,101)( 48,104)( 49, 81)( 50, 84)( 51, 83)( 52, 82)( 53, 95)( 54, 94)( 55, 93)( 56, 96)( 57, 91)( 58, 90)( 59, 89)( 60, 92)( 61, 87)( 62, 86)( 63, 85)( 64, 88)( 66, 68)( 69, 79)( 70, 78)( 71, 77)( 72, 80)( 73, 75);;
s2 := (  1,  7)(  2,  8)(  3,  5)(  4,  6)(  9, 13)( 10, 14)( 11, 15)( 12, 16)( 17, 23)( 18, 24)( 19, 21)( 20, 22)( 25, 29)( 26, 30)( 27, 31)( 28, 32)( 33, 39)( 34, 40)( 35, 37)( 36, 38)( 41, 45)( 42, 46)( 43, 47)( 44, 48)( 49, 55)( 50, 56)( 51, 53)( 52, 54)( 57, 61)( 58, 62)( 59, 63)( 60, 64)( 65, 71)( 66, 72)( 67, 69)( 68, 70)( 73, 77)( 74, 78)( 75, 79)( 76, 80)( 81, 87)( 82, 88)( 83, 85)( 84, 86)( 89, 93)( 90, 94)( 91, 95)( 92, 96)( 97,103)( 98,104)( 99,101)(100,102)(105,109)(106,110)(107,111)(108,112);;
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, s2*s0*s1*s2*s1*s2*s0*s1*s2*s0*s1*s2*s1*s2*s0*s1, 
s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2, 
s0*s1*s0*s1*s2*s1*s2*s0*s1*s0*s1*s2*s0*s1*s2*s1*s0*s1, 
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s2*s1*s0*s2*s1*s0*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 ];;
poly := F / rels;;
Permutation Representation (Magma) : 
s0 := Sym(112)!(  3,  4)(  5,  6)(  9, 13)( 10, 14)( 11, 16)( 12, 15)( 17, 97)( 18, 98)( 19,100)( 20, 99)( 21,102)( 22,101)( 23,103)( 24,104)( 25,109)( 26,110)( 27,112)( 28,111)( 29,105)( 30,106)( 31,108)( 32,107)( 33, 81)( 34, 82)( 35, 84)( 36, 83)( 37, 86)( 38, 85)( 39, 87)( 40, 88)( 41, 93)( 42, 94)( 43, 96)( 44, 95)( 45, 89)( 46, 90)( 47, 92)( 48, 91)( 49, 65)( 50, 66)( 51, 68)( 52, 67)( 53, 70)( 54, 69)( 55, 71)( 56, 72)( 57, 77)( 58, 78)( 59, 80)( 60, 79)( 61, 73)( 62, 74)( 63, 76)( 64, 75);
s1 := Sym(112)!(  1, 17)(  2, 20)(  3, 19)(  4, 18)(  5, 31)(  6, 30)(  7, 29)(  8, 32)(  9, 27)( 10, 26)( 11, 25)( 12, 28)( 13, 23)( 14, 22)( 15, 21)( 16, 24)( 33, 97)( 34,100)( 35, 99)( 36, 98)( 37,111)( 38,110)( 39,109)( 40,112)( 41,107)( 42,106)( 43,105)( 44,108)( 45,103)( 46,102)( 47,101)( 48,104)( 49, 81)( 50, 84)( 51, 83)( 52, 82)( 53, 95)( 54, 94)( 55, 93)( 56, 96)( 57, 91)( 58, 90)( 59, 89)( 60, 92)( 61, 87)( 62, 86)( 63, 85)( 64, 88)( 66, 68)( 69, 79)( 70, 78)( 71, 77)( 72, 80)( 73, 75);
s2 := Sym(112)!(  1,  7)(  2,  8)(  3,  5)(  4,  6)(  9, 13)( 10, 14)( 11, 15)( 12, 16)( 17, 23)( 18, 24)( 19, 21)( 20, 22)( 25, 29)( 26, 30)( 27, 31)( 28, 32)( 33, 39)( 34, 40)( 35, 37)( 36, 38)( 41, 45)( 42, 46)( 43, 47)( 44, 48)( 49, 55)( 50, 56)( 51, 53)( 52, 54)( 57, 61)( 58, 62)( 59, 63)( 60, 64)( 65, 71)( 66, 72)( 67, 69)( 68, 70)( 73, 77)( 74, 78)( 75, 79)( 76, 80)( 81, 87)( 82, 88)( 83, 85)( 84, 86)( 89, 93)( 90, 94)( 91, 95)( 92, 96)( 97,103)( 98,104)( 99,101)(100,102)(105,109)(106,110)(107,111)(108,112);
poly := sub<Sym(112)|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, s2*s0*s1*s2*s1*s2*s0*s1*s2*s0*s1*s2*s1*s2*s0*s1, 
s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2, 
s0*s1*s0*s1*s2*s1*s2*s0*s1*s0*s1*s2*s0*s1*s2*s1*s0*s1, 
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s2*s1*s0*s2*s1*s0*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 >;
References : None.
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