direct product, p-group, metabelian, nilpotent (class 3), monomial
Aliases: C2×D4.7D4, C24.102D4, D4.38(C2×D4), C4⋊C4.4C23, Q8.38(C2×D4), C4.38C22≀C2, (C2×D4).293D4, (C2×Q8).228D4, (C22×Q16)⋊6C2, C4.38(C22×D4), C22⋊C8⋊57C22, (C2×C8).299C23, (C2×C4).220C24, (C2×Q16)⋊37C22, C23.851(C2×D4), (C22×C4).713D4, C22⋊Q8⋊60C22, (C2×Q8).17C23, D4⋊C4⋊62C22, Q8⋊C4⋊74C22, (C2×SD16)⋊68C22, (C22×SD16)⋊18C2, (C2×D4).379C23, C22.87(C4○D8), C22.117C22≀C2, (C22×C4).958C23, (C22×C8).335C22, (C23×C4).540C22, C22.480(C22×D4), (C22×D4).561C22, (C22×Q8).261C22, C22.100(C8.C22), C2.8(C2×C4○D8), (C2×C22⋊C8)⋊24C2, (C2×C22⋊Q8)⋊52C2, (C2×D4⋊C4)⋊21C2, C2.9(C2×C8.C22), (C2×Q8⋊C4)⋊36C2, C2.38(C2×C22≀C2), (C2×C4).1094(C2×D4), (C2×C4⋊C4).581C22, (C22×C4○D4).23C2, (C2×C4○D4).296C22, SmallGroup(128,1733)
Series: Derived ►Chief ►Lower central ►Upper central ►Jennings
Generators and relations for C2×D4.7D4
G = < a,b,c,d,e | a2=b4=c2=d4=1, e2=b2, ab=ba, ac=ca, ad=da, ae=ea, cbc=dbd-1=ebe-1=b-1, dcd-1=ece-1=bc, ede-1=d-1 >
Subgroups: 716 in 380 conjugacy classes, 116 normal (28 characteristic)
C1, C2, C2, C2, C4, C4, C4, C22, C22, C22, C8, C2×C4, C2×C4, C2×C4, D4, D4, Q8, Q8, C23, C23, C23, C22⋊C4, C4⋊C4, C4⋊C4, C2×C8, C2×C8, SD16, Q16, C22×C4, C22×C4, C22×C4, C2×D4, C2×D4, C2×Q8, C2×Q8, C4○D4, C24, C24, C22⋊C8, D4⋊C4, Q8⋊C4, C2×C22⋊C4, C2×C4⋊C4, C2×C4⋊C4, C22⋊Q8, C22⋊Q8, C22×C8, C2×SD16, C2×SD16, C2×Q16, C2×Q16, C23×C4, C23×C4, C22×D4, C22×D4, C22×Q8, C2×C4○D4, C2×C4○D4, C2×C22⋊C8, C2×D4⋊C4, C2×Q8⋊C4, D4.7D4, C2×C22⋊Q8, C22×SD16, C22×Q16, C22×C4○D4, C2×D4.7D4
Quotients: C1, C2, C22, D4, C23, C2×D4, C24, C22≀C2, C4○D8, C8.C22, C22×D4, D4.7D4, C2×C22≀C2, C2×C4○D8, C2×C8.C22, C2×D4.7D4
►On 64 points
(1 17)(2 18)(3 19)(4 20)(5 56)(6 53)(7 54)(8 55)(9 16)(10 13)(11 14)(12 15)(21 33)(22 34)(23 35)(24 36)(25 32)(26 29)(27 30)(28 31)(37 51)(38 52)(39 49)(40 50)(41 47)(42 48)(43 45)(44 46)(57 63)(58 64)(59 61)(60 62)
(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 7)(9 12)(10 11)(13 14)(15 16)(17 20)(18 19)(21 22)(23 24)(25 28)(26 27)(29 30)(31 32)(33 34)(35 36)(38 40)(42 44)(46 48)(50 52)(54 56)(58 60)(62 64)
(1 60 11 56)(2 59 12 55)(3 58 9 54)(4 57 10 53)(5 17 62 14)(6 20 63 13)(7 19 64 16)(8 18 61 15)(21 41 28 37)(22 44 25 40)(23 43 26 39)(24 42 27 38)(29 49 35 45)(30 52 36 48)(31 51 33 47)(32 50 34 46)
(1 46 3 48)(2 45 4 47)(5 25 7 27)(6 28 8 26)(9 52 11 50)(10 51 12 49)(13 37 15 39)(14 40 16 38)(17 44 19 42)(18 43 20 41)(21 61 23 63)(22 64 24 62)(29 53 31 55)(30 56 32 54)(33 59 35 57)(34 58 36 60)
G:=sub<Sym(64)| (1,17)(2,18)(3,19)(4,20)(5,56)(6,53)(7,54)(8,55)(9,16)(10,13)(11,14)(12,15)(21,33)(22,34)(23,35)(24,36)(25,32)(26,29)(27,30)(28,31)(37,51)(38,52)(39,49)(40,50)(41,47)(42,48)(43,45)(44,46)(57,63)(58,64)(59,61)(60,62), (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)(5,7)(9,12)(10,11)(13,14)(15,16)(17,20)(18,19)(21,22)(23,24)(25,28)(26,27)(29,30)(31,32)(33,34)(35,36)(38,40)(42,44)(46,48)(50,52)(54,56)(58,60)(62,64), (1,60,11,56)(2,59,12,55)(3,58,9,54)(4,57,10,53)(5,17,62,14)(6,20,63,13)(7,19,64,16)(8,18,61,15)(21,41,28,37)(22,44,25,40)(23,43,26,39)(24,42,27,38)(29,49,35,45)(30,52,36,48)(31,51,33,47)(32,50,34,46), (1,46,3,48)(2,45,4,47)(5,25,7,27)(6,28,8,26)(9,52,11,50)(10,51,12,49)(13,37,15,39)(14,40,16,38)(17,44,19,42)(18,43,20,41)(21,61,23,63)(22,64,24,62)(29,53,31,55)(30,56,32,54)(33,59,35,57)(34,58,36,60)>;
G:=Group( (1,17)(2,18)(3,19)(4,20)(5,56)(6,53)(7,54)(8,55)(9,16)(10,13)(11,14)(12,15)(21,33)(22,34)(23,35)(24,36)(25,32)(26,29)(27,30)(28,31)(37,51)(38,52)(39,49)(40,50)(41,47)(42,48)(43,45)(44,46)(57,63)(58,64)(59,61)(60,62), (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)(5,7)(9,12)(10,11)(13,14)(15,16)(17,20)(18,19)(21,22)(23,24)(25,28)(26,27)(29,30)(31,32)(33,34)(35,36)(38,40)(42,44)(46,48)(50,52)(54,56)(58,60)(62,64), (1,60,11,56)(2,59,12,55)(3,58,9,54)(4,57,10,53)(5,17,62,14)(6,20,63,13)(7,19,64,16)(8,18,61,15)(21,41,28,37)(22,44,25,40)(23,43,26,39)(24,42,27,38)(29,49,35,45)(30,52,36,48)(31,51,33,47)(32,50,34,46), (1,46,3,48)(2,45,4,47)(5,25,7,27)(6,28,8,26)(9,52,11,50)(10,51,12,49)(13,37,15,39)(14,40,16,38)(17,44,19,42)(18,43,20,41)(21,61,23,63)(22,64,24,62)(29,53,31,55)(30,56,32,54)(33,59,35,57)(34,58,36,60) );
G=PermutationGroup([[(1,17),(2,18),(3,19),(4,20),(5,56),(6,53),(7,54),(8,55),(9,16),(10,13),(11,14),(12,15),(21,33),(22,34),(23,35),(24,36),(25,32),(26,29),(27,30),(28,31),(37,51),(38,52),(39,49),(40,50),(41,47),(42,48),(43,45),(44,46),(57,63),(58,64),(59,61),(60,62)], [(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),(5,7),(9,12),(10,11),(13,14),(15,16),(17,20),(18,19),(21,22),(23,24),(25,28),(26,27),(29,30),(31,32),(33,34),(35,36),(38,40),(42,44),(46,48),(50,52),(54,56),(58,60),(62,64)], [(1,60,11,56),(2,59,12,55),(3,58,9,54),(4,57,10,53),(5,17,62,14),(6,20,63,13),(7,19,64,16),(8,18,61,15),(21,41,28,37),(22,44,25,40),(23,43,26,39),(24,42,27,38),(29,49,35,45),(30,52,36,48),(31,51,33,47),(32,50,34,46)], [(1,46,3,48),(2,45,4,47),(5,25,7,27),(6,28,8,26),(9,52,11,50),(10,51,12,49),(13,37,15,39),(14,40,16,38),(17,44,19,42),(18,43,20,41),(21,61,23,63),(22,64,24,62),(29,53,31,55),(30,56,32,54),(33,59,35,57),(34,58,36,60)]])
38 conjugacy classes
| class | 1 | 2A | ··· | 2G | 2H | ··· | 2M | 4A | ··· | 4H | 4I | 4J | 4K | 4L | 4M | 4N | 4O | 4P | 8A | ··· | 8H |
| order | 1 | 2 | ··· | 2 | 2 | ··· | 2 | 4 | ··· | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 8 | ··· | 8 |
| size | 1 | 1 | ··· | 1 | 4 | ··· | 4 | 2 | ··· | 2 | 4 | 4 | 4 | 4 | 8 | 8 | 8 | 8 | 4 | ··· | 4 |
38 irreducible representations
| dim | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 4 |
| type | + | + | + | + | + | + | + | + | + | + | + | + | + | - | |
| image | C1 | C2 | C2 | C2 | C2 | C2 | C2 | C2 | C2 | D4 | D4 | D4 | D4 | C4○D8 | C8.C22 |
| kernel | C2×D4.7D4 | C2×C22⋊C8 | C2×D4⋊C4 | C2×Q8⋊C4 | D4.7D4 | C2×C22⋊Q8 | C22×SD16 | C22×Q16 | C22×C4○D4 | C22×C4 | C2×D4 | C2×Q8 | C24 | C22 | C22 |
| # reps | 1 | 1 | 1 | 1 | 8 | 1 | 1 | 1 | 1 | 3 | 4 | 4 | 1 | 8 | 2 |
Matrix representation of C2×D4.7D4 ►in GL5(𝔽17)
| 16 | 0 | 0 | 0 | 0 |
| 0 | 1 | 0 | 0 | 0 |
| 0 | 0 | 1 | 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 | 0 | 1 | 0 | 0 |
| 0 | 0 | 0 | 0 | 1 |
| 0 | 0 | 0 | 1 | 0 |
| 16 | 0 | 0 | 0 | 0 |
| 0 | 0 | 2 | 0 | 0 |
| 0 | 8 | 0 | 0 | 0 |
| 0 | 0 | 0 | 14 | 3 |
| 0 | 0 | 0 | 3 | 3 |
| 1 | 0 | 0 | 0 | 0 |
| 0 | 0 | 15 | 0 | 0 |
| 0 | 8 | 0 | 0 | 0 |
| 0 | 0 | 0 | 12 | 5 |
| 0 | 0 | 0 | 5 | 5 |
G:=sub<GL(5,GF(17))| [16,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,16,0,0,0,0,0,16],[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],[16,0,0,0,0,0,16,0,0,0,0,0,1,0,0,0,0,0,0,1,0,0,0,1,0],[16,0,0,0,0,0,0,8,0,0,0,2,0,0,0,0,0,0,14,3,0,0,0,3,3],[1,0,0,0,0,0,0,8,0,0,0,15,0,0,0,0,0,0,12,5,0,0,0,5,5] >;
C2×D4.7D4 in GAP, Magma, Sage, TeX
C_2\times D_4._7D_4
% in TeX
G:=Group("C2xD4.7D4"); // GroupNames label
G:=SmallGroup(128,1733);
// by ID
G=gap.SmallGroup(128,1733);
# by ID
G:=PCGroup([7,-2,2,2,2,-2,2,-2,448,253,758,352,2804,1411,172]);
// Polycyclic
G:=Group<a,b,c,d,e|a^2=b^4=c^2=d^4=1,e^2=b^2,a*b=b*a,a*c=c*a,a*d=d*a,a*e=e*a,c*b*c=d*b*d^-1=e*b*e^-1=b^-1,d*c*d^-1=e*c*e^-1=b*c,e*d*e^-1=d^-1>;
// generators/relations