direct product, abelian, monomial, 2-elementary
Aliases: C2×C126, SmallGroup(252,15)
Series: Derived ►Chief ►Lower central ►Upper central
| C1 — C2×C126 |
| C1 — C2×C126 |
| C1 — C2×C126 |
Generators and relations for C2×C126
G = < a,b | a2=b126=1, ab=ba >
Smallest permutation representation of C2×C126
►Regular action on 252 points
Generators in S252
(1 179)(2 180)(3 181)(4 182)(5 183)(6 184)(7 185)(8 186)(9 187)(10 188)(11 189)(12 190)(13 191)(14 192)(15 193)(16 194)(17 195)(18 196)(19 197)(20 198)(21 199)(22 200)(23 201)(24 202)(25 203)(26 204)(27 205)(28 206)(29 207)(30 208)(31 209)(32 210)(33 211)(34 212)(35 213)(36 214)(37 215)(38 216)(39 217)(40 218)(41 219)(42 220)(43 221)(44 222)(45 223)(46 224)(47 225)(48 226)(49 227)(50 228)(51 229)(52 230)(53 231)(54 232)(55 233)(56 234)(57 235)(58 236)(59 237)(60 238)(61 239)(62 240)(63 241)(64 242)(65 243)(66 244)(67 245)(68 246)(69 247)(70 248)(71 249)(72 250)(73 251)(74 252)(75 127)(76 128)(77 129)(78 130)(79 131)(80 132)(81 133)(82 134)(83 135)(84 136)(85 137)(86 138)(87 139)(88 140)(89 141)(90 142)(91 143)(92 144)(93 145)(94 146)(95 147)(96 148)(97 149)(98 150)(99 151)(100 152)(101 153)(102 154)(103 155)(104 156)(105 157)(106 158)(107 159)(108 160)(109 161)(110 162)(111 163)(112 164)(113 165)(114 166)(115 167)(116 168)(117 169)(118 170)(119 171)(120 172)(121 173)(122 174)(123 175)(124 176)(125 177)(126 178)
(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)(127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252)
G:=sub<Sym(252)| (1,179)(2,180)(3,181)(4,182)(5,183)(6,184)(7,185)(8,186)(9,187)(10,188)(11,189)(12,190)(13,191)(14,192)(15,193)(16,194)(17,195)(18,196)(19,197)(20,198)(21,199)(22,200)(23,201)(24,202)(25,203)(26,204)(27,205)(28,206)(29,207)(30,208)(31,209)(32,210)(33,211)(34,212)(35,213)(36,214)(37,215)(38,216)(39,217)(40,218)(41,219)(42,220)(43,221)(44,222)(45,223)(46,224)(47,225)(48,226)(49,227)(50,228)(51,229)(52,230)(53,231)(54,232)(55,233)(56,234)(57,235)(58,236)(59,237)(60,238)(61,239)(62,240)(63,241)(64,242)(65,243)(66,244)(67,245)(68,246)(69,247)(70,248)(71,249)(72,250)(73,251)(74,252)(75,127)(76,128)(77,129)(78,130)(79,131)(80,132)(81,133)(82,134)(83,135)(84,136)(85,137)(86,138)(87,139)(88,140)(89,141)(90,142)(91,143)(92,144)(93,145)(94,146)(95,147)(96,148)(97,149)(98,150)(99,151)(100,152)(101,153)(102,154)(103,155)(104,156)(105,157)(106,158)(107,159)(108,160)(109,161)(110,162)(111,163)(112,164)(113,165)(114,166)(115,167)(116,168)(117,169)(118,170)(119,171)(120,172)(121,173)(122,174)(123,175)(124,176)(125,177)(126,178), (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)(127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252)>;
G:=Group( (1,179)(2,180)(3,181)(4,182)(5,183)(6,184)(7,185)(8,186)(9,187)(10,188)(11,189)(12,190)(13,191)(14,192)(15,193)(16,194)(17,195)(18,196)(19,197)(20,198)(21,199)(22,200)(23,201)(24,202)(25,203)(26,204)(27,205)(28,206)(29,207)(30,208)(31,209)(32,210)(33,211)(34,212)(35,213)(36,214)(37,215)(38,216)(39,217)(40,218)(41,219)(42,220)(43,221)(44,222)(45,223)(46,224)(47,225)(48,226)(49,227)(50,228)(51,229)(52,230)(53,231)(54,232)(55,233)(56,234)(57,235)(58,236)(59,237)(60,238)(61,239)(62,240)(63,241)(64,242)(65,243)(66,244)(67,245)(68,246)(69,247)(70,248)(71,249)(72,250)(73,251)(74,252)(75,127)(76,128)(77,129)(78,130)(79,131)(80,132)(81,133)(82,134)(83,135)(84,136)(85,137)(86,138)(87,139)(88,140)(89,141)(90,142)(91,143)(92,144)(93,145)(94,146)(95,147)(96,148)(97,149)(98,150)(99,151)(100,152)(101,153)(102,154)(103,155)(104,156)(105,157)(106,158)(107,159)(108,160)(109,161)(110,162)(111,163)(112,164)(113,165)(114,166)(115,167)(116,168)(117,169)(118,170)(119,171)(120,172)(121,173)(122,174)(123,175)(124,176)(125,177)(126,178), (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)(127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252) );
G=PermutationGroup([[(1,179),(2,180),(3,181),(4,182),(5,183),(6,184),(7,185),(8,186),(9,187),(10,188),(11,189),(12,190),(13,191),(14,192),(15,193),(16,194),(17,195),(18,196),(19,197),(20,198),(21,199),(22,200),(23,201),(24,202),(25,203),(26,204),(27,205),(28,206),(29,207),(30,208),(31,209),(32,210),(33,211),(34,212),(35,213),(36,214),(37,215),(38,216),(39,217),(40,218),(41,219),(42,220),(43,221),(44,222),(45,223),(46,224),(47,225),(48,226),(49,227),(50,228),(51,229),(52,230),(53,231),(54,232),(55,233),(56,234),(57,235),(58,236),(59,237),(60,238),(61,239),(62,240),(63,241),(64,242),(65,243),(66,244),(67,245),(68,246),(69,247),(70,248),(71,249),(72,250),(73,251),(74,252),(75,127),(76,128),(77,129),(78,130),(79,131),(80,132),(81,133),(82,134),(83,135),(84,136),(85,137),(86,138),(87,139),(88,140),(89,141),(90,142),(91,143),(92,144),(93,145),(94,146),(95,147),(96,148),(97,149),(98,150),(99,151),(100,152),(101,153),(102,154),(103,155),(104,156),(105,157),(106,158),(107,159),(108,160),(109,161),(110,162),(111,163),(112,164),(113,165),(114,166),(115,167),(116,168),(117,169),(118,170),(119,171),(120,172),(121,173),(122,174),(123,175),(124,176),(125,177),(126,178)], [(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),(127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252)]])
252 conjugacy classes
| class | 1 | 2A | 2B | 2C | 3A | 3B | 6A | ··· | 6F | 7A | ··· | 7F | 9A | ··· | 9F | 14A | ··· | 14R | 18A | ··· | 18R | 21A | ··· | 21L | 42A | ··· | 42AJ | 63A | ··· | 63AJ | 126A | ··· | 126DD |
| order | 1 | 2 | 2 | 2 | 3 | 3 | 6 | ··· | 6 | 7 | ··· | 7 | 9 | ··· | 9 | 14 | ··· | 14 | 18 | ··· | 18 | 21 | ··· | 21 | 42 | ··· | 42 | 63 | ··· | 63 | 126 | ··· | 126 |
| size | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ··· | 1 | 1 | ··· | 1 | 1 | ··· | 1 | 1 | ··· | 1 | 1 | ··· | 1 | 1 | ··· | 1 | 1 | ··· | 1 | 1 | ··· | 1 | 1 | ··· | 1 |
252 irreducible representations
| dim | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| type | + | + | ||||||||||
| image | C1 | C2 | C3 | C6 | C7 | C9 | C14 | C18 | C21 | C42 | C63 | C126 |
| kernel | C2×C126 | C126 | C2×C42 | C42 | C2×C18 | C2×C14 | C18 | C14 | C2×C6 | C6 | C22 | C2 |
| # reps | 1 | 3 | 2 | 6 | 6 | 6 | 18 | 18 | 12 | 36 | 36 | 108 |
Matrix representation of C2×C126 ►in GL2(𝔽127) generated by
| 1 | 0 |
| 0 | 126 |
| 101 | 0 |
| 0 | 99 |
G:=sub<GL(2,GF(127))| [1,0,0,126],[101,0,0,99] >;
C2×C126 in GAP, Magma, Sage, TeX
C_2\times C_{126} % in TeX
G:=Group("C2xC126"); // GroupNames label
G:=SmallGroup(252,15);
// by ID
G=gap.SmallGroup(252,15);
# by ID
G:=PCGroup([5,-2,-2,-3,-7,-3,327]);
// Polycyclic
G:=Group<a,b|a^2=b^126=1,a*b=b*a>;
// generators/relations
Export