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Polytope of Type {6,20,4}

This page is part of the Atlas of Small Regular Polytopes
Atlas Canonical Name : {6,20,4}*1920c
if this polytope has a name.
Group : SmallGroup(1920,240151)
Rank : 4
Schlafli Type : {6,20,4}
Number of vertices, edges, etc : 12, 120, 80, 4
Order of s0s1s2s3 : 60
Order of s0s1s2s3s2s1 : 2
Special Properties :
   Universal
   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) :
   2-fold quotients : {6,20,2}*960c
   4-fold quotients : {6,10,4}*480, {6,20,2}*480b
   5-fold quotients : {6,4,4}*384d
   8-fold quotients : {6,10,2}*240
   10-fold quotients : {3,4,4}*192b, {6,4,2}*192
   12-fold quotients : {2,10,4}*160
   20-fold quotients : {6,2,4}*96, {3,4,2}*96, {6,4,2}*96b, {6,4,2}*96c
   24-fold quotients : {2,10,2}*80
   40-fold quotients : {3,2,4}*48, {3,4,2}*48, {6,2,2}*48
   48-fold quotients : {2,5,2}*40
   60-fold quotients : {2,2,4}*32
   80-fold quotients : {3,2,2}*24
   120-fold quotients : {2,2,2}*16
Covers (Minimal Covers in Boldface) :
   None in this atlas.
Permutation Representation (GAP) :
s0 := (  3,  4)(  7,  8)( 11, 12)( 15, 16)( 19, 20)( 21, 41)( 22, 42)( 23, 44)
( 24, 43)( 25, 45)( 26, 46)( 27, 48)( 28, 47)( 29, 49)( 30, 50)( 31, 52)
( 32, 51)( 33, 53)( 34, 54)( 35, 56)( 36, 55)( 37, 57)( 38, 58)( 39, 60)
( 40, 59)( 63, 64)( 67, 68)( 71, 72)( 75, 76)( 79, 80)( 81,101)( 82,102)
( 83,104)( 84,103)( 85,105)( 86,106)( 87,108)( 88,107)( 89,109)( 90,110)
( 91,112)( 92,111)( 93,113)( 94,114)( 95,116)( 96,115)( 97,117)( 98,118)
( 99,120)(100,119)(123,124)(127,128)(131,132)(135,136)(139,140)(141,161)
(142,162)(143,164)(144,163)(145,165)(146,166)(147,168)(148,167)(149,169)
(150,170)(151,172)(152,171)(153,173)(154,174)(155,176)(156,175)(157,177)
(158,178)(159,180)(160,179)(183,184)(187,188)(191,192)(195,196)(199,200)
(201,221)(202,222)(203,224)(204,223)(205,225)(206,226)(207,228)(208,227)
(209,229)(210,230)(211,232)(212,231)(213,233)(214,234)(215,236)(216,235)
(217,237)(218,238)(219,240)(220,239);;
s1 := (  1, 21)(  2, 24)(  3, 23)(  4, 22)(  5, 37)(  6, 40)(  7, 39)(  8, 38)
(  9, 33)( 10, 36)( 11, 35)( 12, 34)( 13, 29)( 14, 32)( 15, 31)( 16, 30)
( 17, 25)( 18, 28)( 19, 27)( 20, 26)( 42, 44)( 45, 57)( 46, 60)( 47, 59)
( 48, 58)( 49, 53)( 50, 56)( 51, 55)( 52, 54)( 61, 81)( 62, 84)( 63, 83)
( 64, 82)( 65, 97)( 66,100)( 67, 99)( 68, 98)( 69, 93)( 70, 96)( 71, 95)
( 72, 94)( 73, 89)( 74, 92)( 75, 91)( 76, 90)( 77, 85)( 78, 88)( 79, 87)
( 80, 86)(102,104)(105,117)(106,120)(107,119)(108,118)(109,113)(110,116)
(111,115)(112,114)(121,141)(122,144)(123,143)(124,142)(125,157)(126,160)
(127,159)(128,158)(129,153)(130,156)(131,155)(132,154)(133,149)(134,152)
(135,151)(136,150)(137,145)(138,148)(139,147)(140,146)(162,164)(165,177)
(166,180)(167,179)(168,178)(169,173)(170,176)(171,175)(172,174)(181,201)
(182,204)(183,203)(184,202)(185,217)(186,220)(187,219)(188,218)(189,213)
(190,216)(191,215)(192,214)(193,209)(194,212)(195,211)(196,210)(197,205)
(198,208)(199,207)(200,206)(222,224)(225,237)(226,240)(227,239)(228,238)
(229,233)(230,236)(231,235)(232,234);;
s2 := (  1,  6)(  2,  5)(  3,  8)(  4,  7)(  9, 18)( 10, 17)( 11, 20)( 12, 19)
( 13, 14)( 15, 16)( 21, 26)( 22, 25)( 23, 28)( 24, 27)( 29, 38)( 30, 37)
( 31, 40)( 32, 39)( 33, 34)( 35, 36)( 41, 46)( 42, 45)( 43, 48)( 44, 47)
( 49, 58)( 50, 57)( 51, 60)( 52, 59)( 53, 54)( 55, 56)( 61, 66)( 62, 65)
( 63, 68)( 64, 67)( 69, 78)( 70, 77)( 71, 80)( 72, 79)( 73, 74)( 75, 76)
( 81, 86)( 82, 85)( 83, 88)( 84, 87)( 89, 98)( 90, 97)( 91,100)( 92, 99)
( 93, 94)( 95, 96)(101,106)(102,105)(103,108)(104,107)(109,118)(110,117)
(111,120)(112,119)(113,114)(115,116)(121,186)(122,185)(123,188)(124,187)
(125,182)(126,181)(127,184)(128,183)(129,198)(130,197)(131,200)(132,199)
(133,194)(134,193)(135,196)(136,195)(137,190)(138,189)(139,192)(140,191)
(141,206)(142,205)(143,208)(144,207)(145,202)(146,201)(147,204)(148,203)
(149,218)(150,217)(151,220)(152,219)(153,214)(154,213)(155,216)(156,215)
(157,210)(158,209)(159,212)(160,211)(161,226)(162,225)(163,228)(164,227)
(165,222)(166,221)(167,224)(168,223)(169,238)(170,237)(171,240)(172,239)
(173,234)(174,233)(175,236)(176,235)(177,230)(178,229)(179,232)(180,231);;
s3 := (  1,121)(  2,122)(  3,123)(  4,124)(  5,125)(  6,126)(  7,127)(  8,128)
(  9,129)( 10,130)( 11,131)( 12,132)( 13,133)( 14,134)( 15,135)( 16,136)
( 17,137)( 18,138)( 19,139)( 20,140)( 21,141)( 22,142)( 23,143)( 24,144)
( 25,145)( 26,146)( 27,147)( 28,148)( 29,149)( 30,150)( 31,151)( 32,152)
( 33,153)( 34,154)( 35,155)( 36,156)( 37,157)( 38,158)( 39,159)( 40,160)
( 41,161)( 42,162)( 43,163)( 44,164)( 45,165)( 46,166)( 47,167)( 48,168)
( 49,169)( 50,170)( 51,171)( 52,172)( 53,173)( 54,174)( 55,175)( 56,176)
( 57,177)( 58,178)( 59,179)( 60,180)( 61,181)( 62,182)( 63,183)( 64,184)
( 65,185)( 66,186)( 67,187)( 68,188)( 69,189)( 70,190)( 71,191)( 72,192)
( 73,193)( 74,194)( 75,195)( 76,196)( 77,197)( 78,198)( 79,199)( 80,200)
( 81,201)( 82,202)( 83,203)( 84,204)( 85,205)( 86,206)( 87,207)( 88,208)
( 89,209)( 90,210)( 91,211)( 92,212)( 93,213)( 94,214)( 95,215)( 96,216)
( 97,217)( 98,218)( 99,219)(100,220)(101,221)(102,222)(103,223)(104,224)
(105,225)(106,226)(107,227)(108,228)(109,229)(110,230)(111,231)(112,232)
(113,233)(114,234)(115,235)(116,236)(117,237)(118,238)(119,239)(120,240);;
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*s3*s2*s1*s2*s3*s2, 
s2*s3*s2*s3*s2*s3*s2*s3, s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1, 
s2*s0*s1*s2*s0*s1*s0*s1*s2*s0*s1*s2*s0*s1*s0*s1, 
s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1, 
s2*s0*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s0*s1*s2*s0*s1*s2*s1*s2*s0*s1 ];;
poly := F / rels;;
 
Permutation Representation (Magma) :
s0 := Sym(240)!(  3,  4)(  7,  8)( 11, 12)( 15, 16)( 19, 20)( 21, 41)( 22, 42)
( 23, 44)( 24, 43)( 25, 45)( 26, 46)( 27, 48)( 28, 47)( 29, 49)( 30, 50)
( 31, 52)( 32, 51)( 33, 53)( 34, 54)( 35, 56)( 36, 55)( 37, 57)( 38, 58)
( 39, 60)( 40, 59)( 63, 64)( 67, 68)( 71, 72)( 75, 76)( 79, 80)( 81,101)
( 82,102)( 83,104)( 84,103)( 85,105)( 86,106)( 87,108)( 88,107)( 89,109)
( 90,110)( 91,112)( 92,111)( 93,113)( 94,114)( 95,116)( 96,115)( 97,117)
( 98,118)( 99,120)(100,119)(123,124)(127,128)(131,132)(135,136)(139,140)
(141,161)(142,162)(143,164)(144,163)(145,165)(146,166)(147,168)(148,167)
(149,169)(150,170)(151,172)(152,171)(153,173)(154,174)(155,176)(156,175)
(157,177)(158,178)(159,180)(160,179)(183,184)(187,188)(191,192)(195,196)
(199,200)(201,221)(202,222)(203,224)(204,223)(205,225)(206,226)(207,228)
(208,227)(209,229)(210,230)(211,232)(212,231)(213,233)(214,234)(215,236)
(216,235)(217,237)(218,238)(219,240)(220,239);
s1 := Sym(240)!(  1, 21)(  2, 24)(  3, 23)(  4, 22)(  5, 37)(  6, 40)(  7, 39)
(  8, 38)(  9, 33)( 10, 36)( 11, 35)( 12, 34)( 13, 29)( 14, 32)( 15, 31)
( 16, 30)( 17, 25)( 18, 28)( 19, 27)( 20, 26)( 42, 44)( 45, 57)( 46, 60)
( 47, 59)( 48, 58)( 49, 53)( 50, 56)( 51, 55)( 52, 54)( 61, 81)( 62, 84)
( 63, 83)( 64, 82)( 65, 97)( 66,100)( 67, 99)( 68, 98)( 69, 93)( 70, 96)
( 71, 95)( 72, 94)( 73, 89)( 74, 92)( 75, 91)( 76, 90)( 77, 85)( 78, 88)
( 79, 87)( 80, 86)(102,104)(105,117)(106,120)(107,119)(108,118)(109,113)
(110,116)(111,115)(112,114)(121,141)(122,144)(123,143)(124,142)(125,157)
(126,160)(127,159)(128,158)(129,153)(130,156)(131,155)(132,154)(133,149)
(134,152)(135,151)(136,150)(137,145)(138,148)(139,147)(140,146)(162,164)
(165,177)(166,180)(167,179)(168,178)(169,173)(170,176)(171,175)(172,174)
(181,201)(182,204)(183,203)(184,202)(185,217)(186,220)(187,219)(188,218)
(189,213)(190,216)(191,215)(192,214)(193,209)(194,212)(195,211)(196,210)
(197,205)(198,208)(199,207)(200,206)(222,224)(225,237)(226,240)(227,239)
(228,238)(229,233)(230,236)(231,235)(232,234);
s2 := Sym(240)!(  1,  6)(  2,  5)(  3,  8)(  4,  7)(  9, 18)( 10, 17)( 11, 20)
( 12, 19)( 13, 14)( 15, 16)( 21, 26)( 22, 25)( 23, 28)( 24, 27)( 29, 38)
( 30, 37)( 31, 40)( 32, 39)( 33, 34)( 35, 36)( 41, 46)( 42, 45)( 43, 48)
( 44, 47)( 49, 58)( 50, 57)( 51, 60)( 52, 59)( 53, 54)( 55, 56)( 61, 66)
( 62, 65)( 63, 68)( 64, 67)( 69, 78)( 70, 77)( 71, 80)( 72, 79)( 73, 74)
( 75, 76)( 81, 86)( 82, 85)( 83, 88)( 84, 87)( 89, 98)( 90, 97)( 91,100)
( 92, 99)( 93, 94)( 95, 96)(101,106)(102,105)(103,108)(104,107)(109,118)
(110,117)(111,120)(112,119)(113,114)(115,116)(121,186)(122,185)(123,188)
(124,187)(125,182)(126,181)(127,184)(128,183)(129,198)(130,197)(131,200)
(132,199)(133,194)(134,193)(135,196)(136,195)(137,190)(138,189)(139,192)
(140,191)(141,206)(142,205)(143,208)(144,207)(145,202)(146,201)(147,204)
(148,203)(149,218)(150,217)(151,220)(152,219)(153,214)(154,213)(155,216)
(156,215)(157,210)(158,209)(159,212)(160,211)(161,226)(162,225)(163,228)
(164,227)(165,222)(166,221)(167,224)(168,223)(169,238)(170,237)(171,240)
(172,239)(173,234)(174,233)(175,236)(176,235)(177,230)(178,229)(179,232)
(180,231);
s3 := Sym(240)!(  1,121)(  2,122)(  3,123)(  4,124)(  5,125)(  6,126)(  7,127)
(  8,128)(  9,129)( 10,130)( 11,131)( 12,132)( 13,133)( 14,134)( 15,135)
( 16,136)( 17,137)( 18,138)( 19,139)( 20,140)( 21,141)( 22,142)( 23,143)
( 24,144)( 25,145)( 26,146)( 27,147)( 28,148)( 29,149)( 30,150)( 31,151)
( 32,152)( 33,153)( 34,154)( 35,155)( 36,156)( 37,157)( 38,158)( 39,159)
( 40,160)( 41,161)( 42,162)( 43,163)( 44,164)( 45,165)( 46,166)( 47,167)
( 48,168)( 49,169)( 50,170)( 51,171)( 52,172)( 53,173)( 54,174)( 55,175)
( 56,176)( 57,177)( 58,178)( 59,179)( 60,180)( 61,181)( 62,182)( 63,183)
( 64,184)( 65,185)( 66,186)( 67,187)( 68,188)( 69,189)( 70,190)( 71,191)
( 72,192)( 73,193)( 74,194)( 75,195)( 76,196)( 77,197)( 78,198)( 79,199)
( 80,200)( 81,201)( 82,202)( 83,203)( 84,204)( 85,205)( 86,206)( 87,207)
( 88,208)( 89,209)( 90,210)( 91,211)( 92,212)( 93,213)( 94,214)( 95,215)
( 96,216)( 97,217)( 98,218)( 99,219)(100,220)(101,221)(102,222)(103,223)
(104,224)(105,225)(106,226)(107,227)(108,228)(109,229)(110,230)(111,231)
(112,232)(113,233)(114,234)(115,235)(116,236)(117,237)(118,238)(119,239)
(120,240);
poly := sub<Sym(240)|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*s3*s2*s1*s2*s3*s2, s2*s3*s2*s3*s2*s3*s2*s3, 
s0*s1*s0*s1*s0*s1*s0*s1*s0*s1*s0*s1, 
s2*s0*s1*s2*s0*s1*s0*s1*s2*s0*s1*s2*s0*s1*s0*s1, 
s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1*s0*s1*s2*s1, 
s2*s0*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s1*s2*s0*s1*s2*s0*s1*s2*s1*s2*s0*s1 >; 
 
References : None.
to this polytope