direct product, p-group, metabelian, nilpotent (class 3), monomial
Aliases: C2xD4:2Q8, C42.214D4, C42.327C23, D4:2(C2xQ8), (C2xD4):21Q8, C4:C8:74C22, C4:Q8:55C22, C4:C4.34C23, C4.69(C2xSD16), C4.Q8:57C22, C4.22(C22xQ8), (C2xC8).306C23, (C2xC4).269C24, (C2xC4).108SD16, (C22xC4).796D4, C23.865(C2xD4), C4.62(C22:Q8), (C2xD4).391C23, (C4xD4).313C22, C22.84(C2xSD16), C2.10(C22xSD16), (C22xC8).342C22, (C2xC42).815C22, C22.529(C22xD4), C22.97(C22:Q8), D4:C4.178C22, C22.117(C8:C22), (C22xC4).1539C23, (C22xD4).569C22, (C2xC4:C8):37C2, (C2xC4:Q8):32C2, (C2xC4xD4).81C2, (C2xC4.Q8):28C2, C4.79(C2xC4oD4), C2.20(C2xC8:C22), (C2xC4).317(C2xQ8), C2.50(C2xC22:Q8), (C2xC4).1432(C2xD4), (C2xD4:C4).31C2, (C2xC4).835(C4oD4), (C2xC4:C4).598C22, SmallGroup(128,1803)
Series: Derived ►Chief ►Lower central ►Upper central ►Jennings
Generators and relations for C2xD4:2Q8
G = < a,b,c,d,e | a2=b4=c2=d4=1, e2=d2, ab=ba, ac=ca, ad=da, ae=ea, cbc=ebe-1=b-1, bd=db, dcd-1=b2c, ece-1=bc, ede-1=d-1 >
Subgroups: 476 in 240 conjugacy classes, 116 normal (20 characteristic)
C1, C2, C2, C2, C4, C4, C4, C22, C22, C22, C8, C2xC4, C2xC4, C2xC4, D4, D4, Q8, C23, C23, C42, C22:C4, C4:C4, C4:C4, C2xC8, C2xC8, C22xC4, C22xC4, C2xD4, C2xD4, C2xQ8, C24, D4:C4, C4:C8, C4.Q8, C2xC42, C2xC22:C4, C2xC4:C4, C2xC4:C4, C2xC4:C4, C4xD4, C4xD4, C4:Q8, C4:Q8, C22xC8, C23xC4, C22xD4, C22xQ8, C2xD4:C4, C2xC4:C8, C2xC4.Q8, D4:2Q8, C2xC4xD4, C2xC4:Q8, C2xD4:2Q8
Quotients: C1, C2, C22, D4, Q8, C23, SD16, C2xD4, C2xQ8, C4oD4, C24, C22:Q8, C2xSD16, C8:C22, C22xD4, C22xQ8, C2xC4oD4, D4:2Q8, C2xC22:Q8, C22xSD16, C2xC8:C22, C2xD4:2Q8
►On 64 points
(1 15)(2 16)(3 13)(4 14)(5 9)(6 10)(7 11)(8 12)(17 29)(18 30)(19 31)(20 32)(21 25)(22 26)(23 27)(24 28)(33 45)(34 46)(35 47)(36 48)(37 41)(38 42)(39 43)(40 44)(49 61)(50 62)(51 63)(52 64)(53 57)(54 58)(55 59)(56 60)
(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)
(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 35)(37 39)(41 43)(45 47)(49 51)(53 55)(57 59)(61 63)
(1 32 5 26)(2 29 6 27)(3 30 7 28)(4 31 8 25)(9 22 15 20)(10 23 16 17)(11 24 13 18)(12 21 14 19)(33 58 39 64)(34 59 40 61)(35 60 37 62)(36 57 38 63)(41 50 47 56)(42 51 48 53)(43 52 45 54)(44 49 46 55)
(1 47 5 41)(2 46 6 44)(3 45 7 43)(4 48 8 42)(9 37 15 35)(10 40 16 34)(11 39 13 33)(12 38 14 36)(17 61 23 59)(18 64 24 58)(19 63 21 57)(20 62 22 60)(25 53 31 51)(26 56 32 50)(27 55 29 49)(28 54 30 52)
G:=sub<Sym(64)| (1,15)(2,16)(3,13)(4,14)(5,9)(6,10)(7,11)(8,12)(17,29)(18,30)(19,31)(20,32)(21,25)(22,26)(23,27)(24,28)(33,45)(34,46)(35,47)(36,48)(37,41)(38,42)(39,43)(40,44)(49,61)(50,62)(51,63)(52,64)(53,57)(54,58)(55,59)(56,60), (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), (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)(33,35)(37,39)(41,43)(45,47)(49,51)(53,55)(57,59)(61,63), (1,32,5,26)(2,29,6,27)(3,30,7,28)(4,31,8,25)(9,22,15,20)(10,23,16,17)(11,24,13,18)(12,21,14,19)(33,58,39,64)(34,59,40,61)(35,60,37,62)(36,57,38,63)(41,50,47,56)(42,51,48,53)(43,52,45,54)(44,49,46,55), (1,47,5,41)(2,46,6,44)(3,45,7,43)(4,48,8,42)(9,37,15,35)(10,40,16,34)(11,39,13,33)(12,38,14,36)(17,61,23,59)(18,64,24,58)(19,63,21,57)(20,62,22,60)(25,53,31,51)(26,56,32,50)(27,55,29,49)(28,54,30,52)>;
G:=Group( (1,15)(2,16)(3,13)(4,14)(5,9)(6,10)(7,11)(8,12)(17,29)(18,30)(19,31)(20,32)(21,25)(22,26)(23,27)(24,28)(33,45)(34,46)(35,47)(36,48)(37,41)(38,42)(39,43)(40,44)(49,61)(50,62)(51,63)(52,64)(53,57)(54,58)(55,59)(56,60), (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), (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)(33,35)(37,39)(41,43)(45,47)(49,51)(53,55)(57,59)(61,63), (1,32,5,26)(2,29,6,27)(3,30,7,28)(4,31,8,25)(9,22,15,20)(10,23,16,17)(11,24,13,18)(12,21,14,19)(33,58,39,64)(34,59,40,61)(35,60,37,62)(36,57,38,63)(41,50,47,56)(42,51,48,53)(43,52,45,54)(44,49,46,55), (1,47,5,41)(2,46,6,44)(3,45,7,43)(4,48,8,42)(9,37,15,35)(10,40,16,34)(11,39,13,33)(12,38,14,36)(17,61,23,59)(18,64,24,58)(19,63,21,57)(20,62,22,60)(25,53,31,51)(26,56,32,50)(27,55,29,49)(28,54,30,52) );
G=PermutationGroup([[(1,15),(2,16),(3,13),(4,14),(5,9),(6,10),(7,11),(8,12),(17,29),(18,30),(19,31),(20,32),(21,25),(22,26),(23,27),(24,28),(33,45),(34,46),(35,47),(36,48),(37,41),(38,42),(39,43),(40,44),(49,61),(50,62),(51,63),(52,64),(53,57),(54,58),(55,59),(56,60)], [(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)], [(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),(33,35),(37,39),(41,43),(45,47),(49,51),(53,55),(57,59),(61,63)], [(1,32,5,26),(2,29,6,27),(3,30,7,28),(4,31,8,25),(9,22,15,20),(10,23,16,17),(11,24,13,18),(12,21,14,19),(33,58,39,64),(34,59,40,61),(35,60,37,62),(36,57,38,63),(41,50,47,56),(42,51,48,53),(43,52,45,54),(44,49,46,55)], [(1,47,5,41),(2,46,6,44),(3,45,7,43),(4,48,8,42),(9,37,15,35),(10,40,16,34),(11,39,13,33),(12,38,14,36),(17,61,23,59),(18,64,24,58),(19,63,21,57),(20,62,22,60),(25,53,31,51),(26,56,32,50),(27,55,29,49),(28,54,30,52)]])
38 conjugacy classes
| class | 1 | 2A | ··· | 2G | 2H | 2I | 2J | 2K | 4A | ··· | 4H | 4I | ··· | 4N | 4O | 4P | 4Q | 4R | 8A | ··· | 8H |
| order | 1 | 2 | ··· | 2 | 2 | 2 | 2 | 2 | 4 | ··· | 4 | 4 | ··· | 4 | 4 | 4 | 4 | 4 | 8 | ··· | 8 |
| size | 1 | 1 | ··· | 1 | 4 | 4 | 4 | 4 | 2 | ··· | 2 | 4 | ··· | 4 | 8 | 8 | 8 | 8 | 4 | ··· | 4 |
38 irreducible representations
| dim | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 4 |
| type | + | + | + | + | + | + | + | + | + | - | + | ||
| image | C1 | C2 | C2 | C2 | C2 | C2 | C2 | D4 | D4 | Q8 | SD16 | C4oD4 | C8:C22 |
| kernel | C2xD4:2Q8 | C2xD4:C4 | C2xC4:C8 | C2xC4.Q8 | D4:2Q8 | C2xC4xD4 | C2xC4:Q8 | C42 | C22xC4 | C2xD4 | C2xC4 | C2xC4 | C22 |
| # reps | 1 | 2 | 1 | 2 | 8 | 1 | 1 | 2 | 2 | 4 | 8 | 4 | 2 |
Matrix representation of C2xD4:2Q8 ►in GL5(F17)
| 16 | 0 | 0 | 0 | 0 |
| 0 | 16 | 0 | 0 | 0 |
| 0 | 0 | 16 | 0 | 0 |
| 0 | 0 | 0 | 16 | 0 |
| 0 | 0 | 0 | 0 | 16 |
| 1 | 0 | 0 | 0 | 0 |
| 0 | 16 | 0 | 0 | 0 |
| 0 | 0 | 16 | 0 | 0 |
| 0 | 0 | 0 | 0 | 1 |
| 0 | 0 | 0 | 16 | 0 |
| 16 | 0 | 0 | 0 | 0 |
| 0 | 16 | 0 | 0 | 0 |
| 0 | 16 | 1 | 0 | 0 |
| 0 | 0 | 0 | 0 | 1 |
| 0 | 0 | 0 | 1 | 0 |
| 1 | 0 | 0 | 0 | 0 |
| 0 | 4 | 0 | 0 | 0 |
| 0 | 4 | 13 | 0 | 0 |
| 0 | 0 | 0 | 0 | 16 |
| 0 | 0 | 0 | 1 | 0 |
| 1 | 0 | 0 | 0 | 0 |
| 0 | 1 | 15 | 0 | 0 |
| 0 | 1 | 16 | 0 | 0 |
| 0 | 0 | 0 | 12 | 5 |
| 0 | 0 | 0 | 5 | 5 |
G:=sub<GL(5,GF(17))| [16,0,0,0,0,0,16,0,0,0,0,0,16,0,0,0,0,0,16,0,0,0,0,0,16],[1,0,0,0,0,0,16,0,0,0,0,0,16,0,0,0,0,0,0,16,0,0,0,1,0],[16,0,0,0,0,0,16,16,0,0,0,0,1,0,0,0,0,0,0,1,0,0,0,1,0],[1,0,0,0,0,0,4,4,0,0,0,0,13,0,0,0,0,0,0,1,0,0,0,16,0],[1,0,0,0,0,0,1,1,0,0,0,15,16,0,0,0,0,0,12,5,0,0,0,5,5] >;
C2xD4:2Q8 in GAP, Magma, Sage, TeX
C_2\times D_4\rtimes_2Q_8
% in TeX
G:=Group("C2xD4:2Q8"); // GroupNames label
G:=SmallGroup(128,1803);
// by ID
G=gap.SmallGroup(128,1803);
# by ID
G:=PCGroup([7,-2,2,2,2,-2,2,-2,560,253,120,758,4037,1027,124]);
// Polycyclic
G:=Group<a,b,c,d,e|a^2=b^4=c^2=d^4=1,e^2=d^2,a*b=b*a,a*c=c*a,a*d=d*a,a*e=e*a,c*b*c=e*b*e^-1=b^-1,b*d=d*b,d*c*d^-1=b^2*c,e*c*e^-1=b*c,e*d*e^-1=d^-1>;
// generators/relations