Polytope of Type {9,4,4}

This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {9,4,4}*576b
if this polytope has a name.
Group : SmallGroup(576,4970)
Rank : 4
Schlafli Type : {9,4,4}
Number of vertices, edges, etc : 18, 36, 16, 4
Order of s₀s₁s₂s₃ : 36
Order of s₀s₁s₂s₃s₂s₁ : 2
Special Properties :
   Universal
   Orientable
   Flat
Related Polytopes :
   Facet
   Vertex Figure
   Dual
Facet Of :
   {9,4,4,2} of size 1152
Vertex Figure Of :
   {2,9,4,4} of size 1152
Quotients (Maximal Quotients in Boldface) :
   2-fold quotients : {9,4,2}*288
   3-fold quotients : {3,4,4}*192b
   4-fold quotients : {9,2,4}*144, {9,4,2}*144
   6-fold quotients : {3,4,2}*96
   8-fold quotients : {9,2,2}*72
   12-fold quotients : {3,2,4}*48, {3,4,2}*48
   24-fold quotients : {3,2,2}*24
Covers (Minimal Covers in Boldface) :
   2-fold covers : {9,8,4}*1152, {9,4,8}*1152, {18,4,4}*1152d
   3-fold covers : {27,4,4}*1728b, {9,4,12}*1728, {9,12,4}*1728
Permutation Representation (GAP) :

s0 := (  2,  3)(  5,  9)(  6, 11)(  7, 10)(  8, 12)( 13, 33)( 14, 35)( 15, 34)
( 16, 36)( 17, 29)( 18, 31)( 19, 30)( 20, 32)( 21, 25)( 22, 27)( 23, 26)
( 24, 28)( 38, 39)( 41, 45)( 42, 47)( 43, 46)( 44, 48)( 49, 69)( 50, 71)
( 51, 70)( 52, 72)( 53, 65)( 54, 67)( 55, 66)( 56, 68)( 57, 61)( 58, 63)
( 59, 62)( 60, 64)( 74, 75)( 77, 81)( 78, 83)( 79, 82)( 80, 84)( 85,105)
( 86,107)( 87,106)( 88,108)( 89,101)( 90,103)( 91,102)( 92,104)( 93, 97)
( 94, 99)( 95, 98)( 96,100)(110,111)(113,117)(114,119)(115,118)(116,120)
(121,141)(122,143)(123,142)(124,144)(125,137)(126,139)(127,138)(128,140)
(129,133)(130,135)(131,134)(132,136);;
s1 := (  1, 13)(  2, 14)(  3, 16)(  4, 15)(  5, 21)(  6, 22)(  7, 24)(  8, 23)
(  9, 17)( 10, 18)( 11, 20)( 12, 19)( 25, 33)( 26, 34)( 27, 36)( 28, 35)
( 31, 32)( 37, 49)( 38, 50)( 39, 52)( 40, 51)( 41, 57)( 42, 58)( 43, 60)
( 44, 59)( 45, 53)( 46, 54)( 47, 56)( 48, 55)( 61, 69)( 62, 70)( 63, 72)
( 64, 71)( 67, 68)( 73, 85)( 74, 86)( 75, 88)( 76, 87)( 77, 93)( 78, 94)
( 79, 96)( 80, 95)( 81, 89)( 82, 90)( 83, 92)( 84, 91)( 97,105)( 98,106)
( 99,108)(100,107)(103,104)(109,121)(110,122)(111,124)(112,123)(113,129)
(114,130)(115,132)(116,131)(117,125)(118,126)(119,128)(120,127)(133,141)
(134,142)(135,144)(136,143)(139,140);;
s2 := (  1,  4)(  2,  3)(  5,  8)(  6,  7)(  9, 12)( 10, 11)( 13, 16)( 14, 15)
( 17, 20)( 18, 19)( 21, 24)( 22, 23)( 25, 28)( 26, 27)( 29, 32)( 30, 31)
( 33, 36)( 34, 35)( 37, 40)( 38, 39)( 41, 44)( 42, 43)( 45, 48)( 46, 47)
( 49, 52)( 50, 51)( 53, 56)( 54, 55)( 57, 60)( 58, 59)( 61, 64)( 62, 63)
( 65, 68)( 66, 67)( 69, 72)( 70, 71)( 73,112)( 74,111)( 75,110)( 76,109)
( 77,116)( 78,115)( 79,114)( 80,113)( 81,120)( 82,119)( 83,118)( 84,117)
( 85,124)( 86,123)( 87,122)( 88,121)( 89,128)( 90,127)( 91,126)( 92,125)
( 93,132)( 94,131)( 95,130)( 96,129)( 97,136)( 98,135)( 99,134)(100,133)
(101,140)(102,139)(103,138)(104,137)(105,144)(106,143)(107,142)(108,141);;
s3 := (  1, 73)(  2, 74)(  3, 75)(  4, 76)(  5, 77)(  6, 78)(  7, 79)(  8, 80)
(  9, 81)( 10, 82)( 11, 83)( 12, 84)( 13, 85)( 14, 86)( 15, 87)( 16, 88)
( 17, 89)( 18, 90)( 19, 91)( 20, 92)( 21, 93)( 22, 94)( 23, 95)( 24, 96)
( 25, 97)( 26, 98)( 27, 99)( 28,100)( 29,101)( 30,102)( 31,103)( 32,104)
( 33,105)( 34,106)( 35,107)( 36,108)( 37,109)( 38,110)( 39,111)( 40,112)
( 41,113)( 42,114)( 43,115)( 44,116)( 45,117)( 46,118)( 47,119)( 48,120)
( 49,121)( 50,122)( 51,123)( 52,124)( 53,125)( 54,126)( 55,127)( 56,128)
( 57,129)( 58,130)( 59,131)( 60,132)( 61,133)( 62,134)( 63,135)( 64,136)
( 65,137)( 66,138)( 67,139)( 68,140)( 69,141)( 70,142)( 71,143)( 72,144);;
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, s1*s2*s1*s2*s1*s2*s1*s2, 
s1*s2*s3*s2*s1*s2*s3*s2, s2*s3*s2*s3*s2*s3*s2*s3, 
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 ];;
poly := F / rels;;

Permutation Representation (Magma) :

s0 := Sym(144)!(  2,  3)(  5,  9)(  6, 11)(  7, 10)(  8, 12)( 13, 33)( 14, 35)
( 15, 34)( 16, 36)( 17, 29)( 18, 31)( 19, 30)( 20, 32)( 21, 25)( 22, 27)
( 23, 26)( 24, 28)( 38, 39)( 41, 45)( 42, 47)( 43, 46)( 44, 48)( 49, 69)
( 50, 71)( 51, 70)( 52, 72)( 53, 65)( 54, 67)( 55, 66)( 56, 68)( 57, 61)
( 58, 63)( 59, 62)( 60, 64)( 74, 75)( 77, 81)( 78, 83)( 79, 82)( 80, 84)
( 85,105)( 86,107)( 87,106)( 88,108)( 89,101)( 90,103)( 91,102)( 92,104)
( 93, 97)( 94, 99)( 95, 98)( 96,100)(110,111)(113,117)(114,119)(115,118)
(116,120)(121,141)(122,143)(123,142)(124,144)(125,137)(126,139)(127,138)
(128,140)(129,133)(130,135)(131,134)(132,136);
s1 := Sym(144)!(  1, 13)(  2, 14)(  3, 16)(  4, 15)(  5, 21)(  6, 22)(  7, 24)
(  8, 23)(  9, 17)( 10, 18)( 11, 20)( 12, 19)( 25, 33)( 26, 34)( 27, 36)
( 28, 35)( 31, 32)( 37, 49)( 38, 50)( 39, 52)( 40, 51)( 41, 57)( 42, 58)
( 43, 60)( 44, 59)( 45, 53)( 46, 54)( 47, 56)( 48, 55)( 61, 69)( 62, 70)
( 63, 72)( 64, 71)( 67, 68)( 73, 85)( 74, 86)( 75, 88)( 76, 87)( 77, 93)
( 78, 94)( 79, 96)( 80, 95)( 81, 89)( 82, 90)( 83, 92)( 84, 91)( 97,105)
( 98,106)( 99,108)(100,107)(103,104)(109,121)(110,122)(111,124)(112,123)
(113,129)(114,130)(115,132)(116,131)(117,125)(118,126)(119,128)(120,127)
(133,141)(134,142)(135,144)(136,143)(139,140);
s2 := Sym(144)!(  1,  4)(  2,  3)(  5,  8)(  6,  7)(  9, 12)( 10, 11)( 13, 16)
( 14, 15)( 17, 20)( 18, 19)( 21, 24)( 22, 23)( 25, 28)( 26, 27)( 29, 32)
( 30, 31)( 33, 36)( 34, 35)( 37, 40)( 38, 39)( 41, 44)( 42, 43)( 45, 48)
( 46, 47)( 49, 52)( 50, 51)( 53, 56)( 54, 55)( 57, 60)( 58, 59)( 61, 64)
( 62, 63)( 65, 68)( 66, 67)( 69, 72)( 70, 71)( 73,112)( 74,111)( 75,110)
( 76,109)( 77,116)( 78,115)( 79,114)( 80,113)( 81,120)( 82,119)( 83,118)
( 84,117)( 85,124)( 86,123)( 87,122)( 88,121)( 89,128)( 90,127)( 91,126)
( 92,125)( 93,132)( 94,131)( 95,130)( 96,129)( 97,136)( 98,135)( 99,134)
(100,133)(101,140)(102,139)(103,138)(104,137)(105,144)(106,143)(107,142)
(108,141);
s3 := Sym(144)!(  1, 73)(  2, 74)(  3, 75)(  4, 76)(  5, 77)(  6, 78)(  7, 79)
(  8, 80)(  9, 81)( 10, 82)( 11, 83)( 12, 84)( 13, 85)( 14, 86)( 15, 87)
( 16, 88)( 17, 89)( 18, 90)( 19, 91)( 20, 92)( 21, 93)( 22, 94)( 23, 95)
( 24, 96)( 25, 97)( 26, 98)( 27, 99)( 28,100)( 29,101)( 30,102)( 31,103)
( 32,104)( 33,105)( 34,106)( 35,107)( 36,108)( 37,109)( 38,110)( 39,111)
( 40,112)( 41,113)( 42,114)( 43,115)( 44,116)( 45,117)( 46,118)( 47,119)
( 48,120)( 49,121)( 50,122)( 51,123)( 52,124)( 53,125)( 54,126)( 55,127)
( 56,128)( 57,129)( 58,130)( 59,131)( 60,132)( 61,133)( 62,134)( 63,135)
( 64,136)( 65,137)( 66,138)( 67,139)( 68,140)( 69,141)( 70,142)( 71,143)
( 72,144);
poly := sub<Sym(144)|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, 
s1*s2*s1*s2*s1*s2*s1*s2, s1*s2*s3*s2*s1*s2*s3*s2, 
s2*s3*s2*s3*s2*s3*s2*s3, 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 >;

References : None.
to this polytope