Polytope of Type {7,4}

This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {7,4}*1792a
if this polytope has a name.
Group : SmallGroup(1792,1083551)
Rank : 3
Schlafli Type : {7,4}
Number of vertices, edges, etc : 224, 448, 128
Order of s₀s₁s₂ : 7
Order of s₀s₁s₂s₁ : 8
Special Properties :
   Compact Hyperbolic Quotient
   Locally Spherical
   Non-Orientable
   Self-Petrie
Related Polytopes :
   Facet
   Vertex Figure
   Dual
   Petrial
   Skewing Operation Facet Of :
   None in this Atlas
Vertex Figure Of :
   None in this Atlas
Quotients (Maximal Quotients in Boldface) :
   2-fold quotients : {7,4}*896
Covers (Minimal Covers in Boldface) :
   None in this atlas.
Permutation Representation (GAP) :

s0 := (  3, 17)(  4, 18)(  5, 97)(  6, 98)(  7,113)(  8,114)(  9, 33)( 10, 34)
( 11, 49)( 12, 50)( 13, 65)( 14, 66)( 15, 81)( 16, 82)( 19, 20)( 21,100)
( 22, 99)( 23,115)( 24,116)( 25, 36)( 26, 35)( 27, 51)( 28, 52)( 29, 67)
( 30, 68)( 31, 84)( 32, 83)( 37,105)( 38,106)( 39,122)( 40,121)( 43, 58)
( 44, 57)( 45, 73)( 46, 74)( 47, 90)( 48, 89)( 53,108)( 54,107)( 55,124)
( 56,123)( 59, 60)( 61, 75)( 62, 76)( 63, 91)( 64, 92)( 69,110)( 70,109)
( 71,126)( 72,125)( 77, 78)( 79, 94)( 80, 93)( 85,111)( 86,112)( 87,128)
( 88,127)(101,102)(103,117)(104,118);;
s1 := (  3, 33)(  4, 34)(  5,113)(  6,114)(  7, 81)(  8, 82)(  9, 65)( 10, 66)
( 11, 97)( 12, 98)( 13, 49)( 14, 50)( 15, 17)( 16, 18)( 19, 48)( 20, 47)
( 21,128)( 22,127)( 23, 95)( 24, 96)( 25, 80)( 26, 79)( 27,111)( 28,112)
( 29, 63)( 30, 64)( 31, 32)( 35, 36)( 37,115)( 38,116)( 39, 84)( 40, 83)
( 41, 67)( 42, 68)( 43,100)( 44, 99)( 45, 51)( 46, 52)( 53,126)( 54,125)
( 55, 94)( 56, 93)( 57, 78)( 58, 77)( 59,110)( 60,109)( 69,122)( 70,121)
( 71, 90)( 72, 89)( 75,105)( 76,106)( 85,119)( 86,120)( 87, 88)( 91,103)
( 92,104)(101,124)(102,123)(107,108);;
s2 := (  1, 95)(  2, 96)(  3, 94)(  4, 93)(  5, 91)(  6, 92)(  7, 90)(  8, 89)
(  9, 88)( 10, 87)( 11, 85)( 12, 86)( 13, 84)( 14, 83)( 15, 81)( 16, 82)
( 17, 79)( 18, 80)( 19, 78)( 20, 77)( 21, 75)( 22, 76)( 23, 74)( 24, 73)
( 25, 72)( 26, 71)( 27, 69)( 28, 70)( 29, 68)( 30, 67)( 31, 65)( 32, 66)
( 33,127)( 34,128)( 35,126)( 36,125)( 37,123)( 38,124)( 39,122)( 40,121)
( 41,120)( 42,119)( 43,117)( 44,118)( 45,116)( 46,115)( 47,113)( 48,114)
( 49,111)( 50,112)( 51,110)( 52,109)( 53,107)( 54,108)( 55,106)( 56,105)
( 57,104)( 58,103)( 59,101)( 60,102)( 61,100)( 62, 99)( 63, 97)( 64, 98);;
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, s1*s2*s1*s2*s1*s2*s1*s2, 
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1, 
s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2, 
s0*s2*s1*s2*s1*s0*s1*s0*s1*s2*s1*s0*s1*s0*s2*s1*s2*s1*s0*s1*s0*s1*s2*s1*s0*s1 ];;
poly := F / rels;;

Permutation Representation (Magma) :

s0 := Sym(128)!(  3, 17)(  4, 18)(  5, 97)(  6, 98)(  7,113)(  8,114)(  9, 33)
( 10, 34)( 11, 49)( 12, 50)( 13, 65)( 14, 66)( 15, 81)( 16, 82)( 19, 20)
( 21,100)( 22, 99)( 23,115)( 24,116)( 25, 36)( 26, 35)( 27, 51)( 28, 52)
( 29, 67)( 30, 68)( 31, 84)( 32, 83)( 37,105)( 38,106)( 39,122)( 40,121)
( 43, 58)( 44, 57)( 45, 73)( 46, 74)( 47, 90)( 48, 89)( 53,108)( 54,107)
( 55,124)( 56,123)( 59, 60)( 61, 75)( 62, 76)( 63, 91)( 64, 92)( 69,110)
( 70,109)( 71,126)( 72,125)( 77, 78)( 79, 94)( 80, 93)( 85,111)( 86,112)
( 87,128)( 88,127)(101,102)(103,117)(104,118);
s1 := Sym(128)!(  3, 33)(  4, 34)(  5,113)(  6,114)(  7, 81)(  8, 82)(  9, 65)
( 10, 66)( 11, 97)( 12, 98)( 13, 49)( 14, 50)( 15, 17)( 16, 18)( 19, 48)
( 20, 47)( 21,128)( 22,127)( 23, 95)( 24, 96)( 25, 80)( 26, 79)( 27,111)
( 28,112)( 29, 63)( 30, 64)( 31, 32)( 35, 36)( 37,115)( 38,116)( 39, 84)
( 40, 83)( 41, 67)( 42, 68)( 43,100)( 44, 99)( 45, 51)( 46, 52)( 53,126)
( 54,125)( 55, 94)( 56, 93)( 57, 78)( 58, 77)( 59,110)( 60,109)( 69,122)
( 70,121)( 71, 90)( 72, 89)( 75,105)( 76,106)( 85,119)( 86,120)( 87, 88)
( 91,103)( 92,104)(101,124)(102,123)(107,108);
s2 := Sym(128)!(  1, 95)(  2, 96)(  3, 94)(  4, 93)(  5, 91)(  6, 92)(  7, 90)
(  8, 89)(  9, 88)( 10, 87)( 11, 85)( 12, 86)( 13, 84)( 14, 83)( 15, 81)
( 16, 82)( 17, 79)( 18, 80)( 19, 78)( 20, 77)( 21, 75)( 22, 76)( 23, 74)
( 24, 73)( 25, 72)( 26, 71)( 27, 69)( 28, 70)( 29, 68)( 30, 67)( 31, 65)
( 32, 66)( 33,127)( 34,128)( 35,126)( 36,125)( 37,123)( 38,124)( 39,122)
( 40,121)( 41,120)( 42,119)( 43,117)( 44,118)( 45,116)( 46,115)( 47,113)
( 48,114)( 49,111)( 50,112)( 51,110)( 52,109)( 53,107)( 54,108)( 55,106)
( 56,105)( 57,104)( 58,103)( 59,101)( 60,102)( 61,100)( 62, 99)( 63, 97)
( 64, 98);
poly := sub<Sym(128)|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, s1*s2*s1*s2*s1*s2*s1*s2, 
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1, 
s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2*s0*s1*s2, 
s0*s2*s1*s2*s1*s0*s1*s0*s1*s2*s1*s0*s1*s0*s2*s1*s2*s1*s0*s1*s0*s1*s2*s1*s0*s1 >;

References : None.
to this polytope