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G = (C2×C4).22D20order 320 = 26·5

15th non-split extension by C2×C4 of D20 acting via D20/C10=C22

metabelian, supersoluble, monomial, 2-hyperelementary

Aliases: (C2×C4).22D20, (C2×C20).33D4, (C22×D5).2Q8, C22.44(Q8×D5), C2.4(C4⋊D20), C10.2(C41D4), (C22×C4).73D10, C22.84(C2×D20), C51(C23.4Q8), C2.9(D102Q8), C2.C4214D5, C10.28(C22⋊Q8), (C23×D5).9C22, (C22×C20).47C22, C23.365(C22×D5), C22.91(D42D5), (C22×C10).302C23, C2.9(C22.D20), C10.13(C22.D4), (C22×Dic5).24C22, (C2×C4⋊Dic5)⋊4C2, (C2×C10).98(C2×D4), (C2×C10).71(C2×Q8), (C2×D10⋊C4).19C2, (C2×C10).136(C4○D4), (C5×C2.C42)⋊12C2, SmallGroup(320,304)

Series: Derived Chief Lower central Upper central

C1C22×C10 — (C2×C4).22D20
C1C5C10C2×C10C22×C10C23×D5C2×D10⋊C4 — (C2×C4).22D20
C5C22×C10 — (C2×C4).22D20
C1C23C2.C42

Generators and relations for (C2×C4).22D20
 G = < a,b,c,d | a2=b4=c20=1, d2=a, cbc-1=ab=ba, ac=ca, ad=da, dbd-1=b-1, dcd-1=ac-1 >

Subgroups: 790 in 186 conjugacy classes, 65 normal (12 characteristic)
C1, C2, C2 [×6], C2 [×2], C4 [×9], C22, C22 [×6], C22 [×10], C5, C2×C4 [×6], C2×C4 [×15], C23, C23 [×8], D5 [×2], C10, C10 [×6], C22⋊C4 [×6], C4⋊C4 [×6], C22×C4 [×3], C22×C4 [×3], C24, Dic5 [×3], C20 [×6], D10 [×10], C2×C10, C2×C10 [×6], C2.C42, C2×C22⋊C4 [×3], C2×C4⋊C4 [×3], C2×Dic5 [×9], C2×C20 [×6], C2×C20 [×6], C22×D5 [×2], C22×D5 [×6], C22×C10, C23.4Q8, C4⋊Dic5 [×6], D10⋊C4 [×6], C22×Dic5 [×3], C22×C20 [×3], C23×D5, C5×C2.C42, C2×C4⋊Dic5 [×3], C2×D10⋊C4 [×3], (C2×C4).22D20
Quotients: C1, C2 [×7], C22 [×7], D4 [×6], Q8 [×2], C23, D5, C2×D4 [×3], C2×Q8, C4○D4 [×3], D10 [×3], C22⋊Q8 [×3], C22.D4 [×3], C41D4, D20 [×6], C22×D5, C23.4Q8, C2×D20 [×3], D42D5 [×3], Q8×D5, C4⋊D20, C22.D20 [×3], D102Q8 [×3], (C2×C4).22D20

Smallest permutation representation of (C2×C4).22D20
On 160 points
Generators in S160
(1 114)(2 115)(3 116)(4 117)(5 118)(6 119)(7 120)(8 101)(9 102)(10 103)(11 104)(12 105)(13 106)(14 107)(15 108)(16 109)(17 110)(18 111)(19 112)(20 113)(21 43)(22 44)(23 45)(24 46)(25 47)(26 48)(27 49)(28 50)(29 51)(30 52)(31 53)(32 54)(33 55)(34 56)(35 57)(36 58)(37 59)(38 60)(39 41)(40 42)(61 150)(62 151)(63 152)(64 153)(65 154)(66 155)(67 156)(68 157)(69 158)(70 159)(71 160)(72 141)(73 142)(74 143)(75 144)(76 145)(77 146)(78 147)(79 148)(80 149)(81 139)(82 140)(83 121)(84 122)(85 123)(86 124)(87 125)(88 126)(89 127)(90 128)(91 129)(92 130)(93 131)(94 132)(95 133)(96 134)(97 135)(98 136)(99 137)(100 138)
(1 71 42 86)(2 141 43 125)(3 73 44 88)(4 143 45 127)(5 75 46 90)(6 145 47 129)(7 77 48 92)(8 147 49 131)(9 79 50 94)(10 149 51 133)(11 61 52 96)(12 151 53 135)(13 63 54 98)(14 153 55 137)(15 65 56 100)(16 155 57 139)(17 67 58 82)(18 157 59 121)(19 69 60 84)(20 159 41 123)(21 87 115 72)(22 126 116 142)(23 89 117 74)(24 128 118 144)(25 91 119 76)(26 130 120 146)(27 93 101 78)(28 132 102 148)(29 95 103 80)(30 134 104 150)(31 97 105 62)(32 136 106 152)(33 99 107 64)(34 138 108 154)(35 81 109 66)(36 140 110 156)(37 83 111 68)(38 122 112 158)(39 85 113 70)(40 124 114 160)
(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)(101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120)(121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140)(141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160)
(1 113 114 20)(2 19 115 112)(3 111 116 18)(4 17 117 110)(5 109 118 16)(6 15 119 108)(7 107 120 14)(8 13 101 106)(9 105 102 12)(10 11 103 104)(21 38 43 60)(22 59 44 37)(23 36 45 58)(24 57 46 35)(25 34 47 56)(26 55 48 33)(27 32 49 54)(28 53 50 31)(29 30 51 52)(39 40 41 42)(61 95 150 133)(62 132 151 94)(63 93 152 131)(64 130 153 92)(65 91 154 129)(66 128 155 90)(67 89 156 127)(68 126 157 88)(69 87 158 125)(70 124 159 86)(71 85 160 123)(72 122 141 84)(73 83 142 121)(74 140 143 82)(75 81 144 139)(76 138 145 100)(77 99 146 137)(78 136 147 98)(79 97 148 135)(80 134 149 96)

G:=sub<Sym(160)| (1,114)(2,115)(3,116)(4,117)(5,118)(6,119)(7,120)(8,101)(9,102)(10,103)(11,104)(12,105)(13,106)(14,107)(15,108)(16,109)(17,110)(18,111)(19,112)(20,113)(21,43)(22,44)(23,45)(24,46)(25,47)(26,48)(27,49)(28,50)(29,51)(30,52)(31,53)(32,54)(33,55)(34,56)(35,57)(36,58)(37,59)(38,60)(39,41)(40,42)(61,150)(62,151)(63,152)(64,153)(65,154)(66,155)(67,156)(68,157)(69,158)(70,159)(71,160)(72,141)(73,142)(74,143)(75,144)(76,145)(77,146)(78,147)(79,148)(80,149)(81,139)(82,140)(83,121)(84,122)(85,123)(86,124)(87,125)(88,126)(89,127)(90,128)(91,129)(92,130)(93,131)(94,132)(95,133)(96,134)(97,135)(98,136)(99,137)(100,138), (1,71,42,86)(2,141,43,125)(3,73,44,88)(4,143,45,127)(5,75,46,90)(6,145,47,129)(7,77,48,92)(8,147,49,131)(9,79,50,94)(10,149,51,133)(11,61,52,96)(12,151,53,135)(13,63,54,98)(14,153,55,137)(15,65,56,100)(16,155,57,139)(17,67,58,82)(18,157,59,121)(19,69,60,84)(20,159,41,123)(21,87,115,72)(22,126,116,142)(23,89,117,74)(24,128,118,144)(25,91,119,76)(26,130,120,146)(27,93,101,78)(28,132,102,148)(29,95,103,80)(30,134,104,150)(31,97,105,62)(32,136,106,152)(33,99,107,64)(34,138,108,154)(35,81,109,66)(36,140,110,156)(37,83,111,68)(38,122,112,158)(39,85,113,70)(40,124,114,160), (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)(101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120)(121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140)(141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160), (1,113,114,20)(2,19,115,112)(3,111,116,18)(4,17,117,110)(5,109,118,16)(6,15,119,108)(7,107,120,14)(8,13,101,106)(9,105,102,12)(10,11,103,104)(21,38,43,60)(22,59,44,37)(23,36,45,58)(24,57,46,35)(25,34,47,56)(26,55,48,33)(27,32,49,54)(28,53,50,31)(29,30,51,52)(39,40,41,42)(61,95,150,133)(62,132,151,94)(63,93,152,131)(64,130,153,92)(65,91,154,129)(66,128,155,90)(67,89,156,127)(68,126,157,88)(69,87,158,125)(70,124,159,86)(71,85,160,123)(72,122,141,84)(73,83,142,121)(74,140,143,82)(75,81,144,139)(76,138,145,100)(77,99,146,137)(78,136,147,98)(79,97,148,135)(80,134,149,96)>;

G:=Group( (1,114)(2,115)(3,116)(4,117)(5,118)(6,119)(7,120)(8,101)(9,102)(10,103)(11,104)(12,105)(13,106)(14,107)(15,108)(16,109)(17,110)(18,111)(19,112)(20,113)(21,43)(22,44)(23,45)(24,46)(25,47)(26,48)(27,49)(28,50)(29,51)(30,52)(31,53)(32,54)(33,55)(34,56)(35,57)(36,58)(37,59)(38,60)(39,41)(40,42)(61,150)(62,151)(63,152)(64,153)(65,154)(66,155)(67,156)(68,157)(69,158)(70,159)(71,160)(72,141)(73,142)(74,143)(75,144)(76,145)(77,146)(78,147)(79,148)(80,149)(81,139)(82,140)(83,121)(84,122)(85,123)(86,124)(87,125)(88,126)(89,127)(90,128)(91,129)(92,130)(93,131)(94,132)(95,133)(96,134)(97,135)(98,136)(99,137)(100,138), (1,71,42,86)(2,141,43,125)(3,73,44,88)(4,143,45,127)(5,75,46,90)(6,145,47,129)(7,77,48,92)(8,147,49,131)(9,79,50,94)(10,149,51,133)(11,61,52,96)(12,151,53,135)(13,63,54,98)(14,153,55,137)(15,65,56,100)(16,155,57,139)(17,67,58,82)(18,157,59,121)(19,69,60,84)(20,159,41,123)(21,87,115,72)(22,126,116,142)(23,89,117,74)(24,128,118,144)(25,91,119,76)(26,130,120,146)(27,93,101,78)(28,132,102,148)(29,95,103,80)(30,134,104,150)(31,97,105,62)(32,136,106,152)(33,99,107,64)(34,138,108,154)(35,81,109,66)(36,140,110,156)(37,83,111,68)(38,122,112,158)(39,85,113,70)(40,124,114,160), (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)(101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120)(121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140)(141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160), (1,113,114,20)(2,19,115,112)(3,111,116,18)(4,17,117,110)(5,109,118,16)(6,15,119,108)(7,107,120,14)(8,13,101,106)(9,105,102,12)(10,11,103,104)(21,38,43,60)(22,59,44,37)(23,36,45,58)(24,57,46,35)(25,34,47,56)(26,55,48,33)(27,32,49,54)(28,53,50,31)(29,30,51,52)(39,40,41,42)(61,95,150,133)(62,132,151,94)(63,93,152,131)(64,130,153,92)(65,91,154,129)(66,128,155,90)(67,89,156,127)(68,126,157,88)(69,87,158,125)(70,124,159,86)(71,85,160,123)(72,122,141,84)(73,83,142,121)(74,140,143,82)(75,81,144,139)(76,138,145,100)(77,99,146,137)(78,136,147,98)(79,97,148,135)(80,134,149,96) );

G=PermutationGroup([(1,114),(2,115),(3,116),(4,117),(5,118),(6,119),(7,120),(8,101),(9,102),(10,103),(11,104),(12,105),(13,106),(14,107),(15,108),(16,109),(17,110),(18,111),(19,112),(20,113),(21,43),(22,44),(23,45),(24,46),(25,47),(26,48),(27,49),(28,50),(29,51),(30,52),(31,53),(32,54),(33,55),(34,56),(35,57),(36,58),(37,59),(38,60),(39,41),(40,42),(61,150),(62,151),(63,152),(64,153),(65,154),(66,155),(67,156),(68,157),(69,158),(70,159),(71,160),(72,141),(73,142),(74,143),(75,144),(76,145),(77,146),(78,147),(79,148),(80,149),(81,139),(82,140),(83,121),(84,122),(85,123),(86,124),(87,125),(88,126),(89,127),(90,128),(91,129),(92,130),(93,131),(94,132),(95,133),(96,134),(97,135),(98,136),(99,137),(100,138)], [(1,71,42,86),(2,141,43,125),(3,73,44,88),(4,143,45,127),(5,75,46,90),(6,145,47,129),(7,77,48,92),(8,147,49,131),(9,79,50,94),(10,149,51,133),(11,61,52,96),(12,151,53,135),(13,63,54,98),(14,153,55,137),(15,65,56,100),(16,155,57,139),(17,67,58,82),(18,157,59,121),(19,69,60,84),(20,159,41,123),(21,87,115,72),(22,126,116,142),(23,89,117,74),(24,128,118,144),(25,91,119,76),(26,130,120,146),(27,93,101,78),(28,132,102,148),(29,95,103,80),(30,134,104,150),(31,97,105,62),(32,136,106,152),(33,99,107,64),(34,138,108,154),(35,81,109,66),(36,140,110,156),(37,83,111,68),(38,122,112,158),(39,85,113,70),(40,124,114,160)], [(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),(101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120),(121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140),(141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160)], [(1,113,114,20),(2,19,115,112),(3,111,116,18),(4,17,117,110),(5,109,118,16),(6,15,119,108),(7,107,120,14),(8,13,101,106),(9,105,102,12),(10,11,103,104),(21,38,43,60),(22,59,44,37),(23,36,45,58),(24,57,46,35),(25,34,47,56),(26,55,48,33),(27,32,49,54),(28,53,50,31),(29,30,51,52),(39,40,41,42),(61,95,150,133),(62,132,151,94),(63,93,152,131),(64,130,153,92),(65,91,154,129),(66,128,155,90),(67,89,156,127),(68,126,157,88),(69,87,158,125),(70,124,159,86),(71,85,160,123),(72,122,141,84),(73,83,142,121),(74,140,143,82),(75,81,144,139),(76,138,145,100),(77,99,146,137),(78,136,147,98),(79,97,148,135),(80,134,149,96)])

62 conjugacy classes

class 1 2A···2G2H2I4A···4F4G···4L5A5B10A···10N20A···20X
order12···2224···44···45510···1020···20
size11···120204···420···20222···24···4

62 irreducible representations

dim111122222244
type+++++-+++--
imageC1C2C2C2D4Q8D5C4○D4D10D20D42D5Q8×D5
kernel(C2×C4).22D20C5×C2.C42C2×C4⋊Dic5C2×D10⋊C4C2×C20C22×D5C2.C42C2×C10C22×C4C2×C4C22C22
# reps1133622662462

Matrix representation of (C2×C4).22D20 in GL6(𝔽41)

100000
010000
001000
000100
0000400
0000040
,
30130000
19110000
002900
0043900
0000940
00003932
,
1400000
8340000
0023000
00271600
000019
0000040
,
4000000
3310000
00393200
0014200
000019
00001840

G:=sub<GL(6,GF(41))| [1,0,0,0,0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,0,0,40,0,0,0,0,0,0,40],[30,19,0,0,0,0,13,11,0,0,0,0,0,0,2,4,0,0,0,0,9,39,0,0,0,0,0,0,9,39,0,0,0,0,40,32],[1,8,0,0,0,0,40,34,0,0,0,0,0,0,2,27,0,0,0,0,30,16,0,0,0,0,0,0,1,0,0,0,0,0,9,40],[40,33,0,0,0,0,0,1,0,0,0,0,0,0,39,14,0,0,0,0,32,2,0,0,0,0,0,0,1,18,0,0,0,0,9,40] >;

(C2×C4).22D20 in GAP, Magma, Sage, TeX

(C_2\times C_4)._{22}D_{20}
% in TeX

G:=Group("(C2xC4).22D20");
// GroupNames label

G:=SmallGroup(320,304);
// by ID

G=gap.SmallGroup(320,304);
# by ID

G:=PCGroup([7,-2,-2,-2,-2,-2,-2,-5,253,344,254,387,226,12550]);
// Polycyclic

G:=Group<a,b,c,d|a^2=b^4=c^20=1,d^2=a,c*b*c^-1=a*b=b*a,a*c=c*a,a*d=d*a,d*b*d^-1=b^-1,d*c*d^-1=a*c^-1>;
// generators/relations

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