p-group, metabelian, nilpotent (class 2), monomial
Aliases: D4○(C22⋊C8), Q8○(C22⋊C8), C4○D4.56D4, C22⋊3(C8○D4), C24.74(C2×C4), C22⋊C8⋊73C22, (C2×C4).630C24, (C2×C8).465C23, (C22×C8)⋊46C22, (C22×D4).35C4, C4.179(C22×D4), (C22×Q8).28C4, C24.4C4⋊31C2, D4.15(C22⋊C4), C2.7(Q8○M4(2)), Q8.15(C22⋊C4), C23.97(C22×C4), (C2×M4(2))⋊65C22, (C23×C4).507C22, C22.160(C23×C4), (C22×C4).1494C23, C2.7(C2×C8○D4), (C2×C8○D4)⋊16C2, C4○D4○(C22⋊C8), (C2×Q8)○(C22⋊C8), (C2×C22⋊C8)⋊41C2, (C2×C4○D4).23C4, C4.28(C2×C22⋊C4), (C2×D4).220(C2×C4), (C2×C4).1079(C2×D4), (C2×Q8).223(C2×C4), C22.2(C2×C22⋊C4), (C22×C8)⋊C2⋊27C2, (C22×C4).320(C2×C4), (C2×C4).241(C22×C4), (C22×C4○D4).15C2, C2.23(C22×C22⋊C4), (C2×C4○D4).269C22, C22⋊C8○(C2×C4○D4), SmallGroup(128,1612)
Series: Derived ►Chief ►Lower central ►Upper central ►Jennings
Generators and relations for D4○(C22⋊C8)
G = < a,b,c,d,e | a4=b2=c2=d2=1, e4=a2, bab=a-1, ac=ca, ad=da, ae=ea, bc=cb, bd=db, be=eb, ece-1=cd=dc, de=ed >
Subgroups: 636 in 387 conjugacy classes, 174 normal (16 characteristic)
C1, C2, C2, C4, C4, C22, C22, C22, C8, C2×C4, C2×C4, C2×C4, D4, D4, Q8, Q8, C23, C23, C23, C2×C8, C2×C8, M4(2), C22×C4, C22×C4, C22×C4, C2×D4, C2×D4, C2×Q8, C2×Q8, C2×Q8, C4○D4, C4○D4, C24, C22⋊C8, C22⋊C8, C22×C8, C2×M4(2), C8○D4, C23×C4, C22×D4, C22×Q8, C2×C4○D4, C2×C4○D4, C2×C4○D4, C2×C22⋊C8, C24.4C4, (C22×C8)⋊C2, C2×C8○D4, C22×C4○D4, D4○(C22⋊C8)
Quotients: C1, C2, C4, C22, C2×C4, D4, C23, C22⋊C4, C22×C4, C2×D4, C24, C2×C22⋊C4, C8○D4, C23×C4, C22×D4, C22×C22⋊C4, C2×C8○D4, Q8○M4(2), D4○(C22⋊C8)
►On 32 points
(1 29 5 25)(2 30 6 26)(3 31 7 27)(4 32 8 28)(9 22 13 18)(10 23 14 19)(11 24 15 20)(12 17 16 21)
(1 17)(2 18)(3 19)(4 20)(5 21)(6 22)(7 23)(8 24)(9 26)(10 27)(11 28)(12 29)(13 30)(14 31)(15 32)(16 25)
(1 5)(2 28)(3 7)(4 30)(6 32)(8 26)(9 24)(10 14)(11 18)(12 16)(13 20)(15 22)(17 21)(19 23)(25 29)(27 31)
(1 31)(2 32)(3 25)(4 26)(5 27)(6 28)(7 29)(8 30)(9 20)(10 21)(11 22)(12 23)(13 24)(14 17)(15 18)(16 19)
(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)
G:=sub<Sym(32)| (1,29,5,25)(2,30,6,26)(3,31,7,27)(4,32,8,28)(9,22,13,18)(10,23,14,19)(11,24,15,20)(12,17,16,21), (1,17)(2,18)(3,19)(4,20)(5,21)(6,22)(7,23)(8,24)(9,26)(10,27)(11,28)(12,29)(13,30)(14,31)(15,32)(16,25), (1,5)(2,28)(3,7)(4,30)(6,32)(8,26)(9,24)(10,14)(11,18)(12,16)(13,20)(15,22)(17,21)(19,23)(25,29)(27,31), (1,31)(2,32)(3,25)(4,26)(5,27)(6,28)(7,29)(8,30)(9,20)(10,21)(11,22)(12,23)(13,24)(14,17)(15,18)(16,19), (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)>;
G:=Group( (1,29,5,25)(2,30,6,26)(3,31,7,27)(4,32,8,28)(9,22,13,18)(10,23,14,19)(11,24,15,20)(12,17,16,21), (1,17)(2,18)(3,19)(4,20)(5,21)(6,22)(7,23)(8,24)(9,26)(10,27)(11,28)(12,29)(13,30)(14,31)(15,32)(16,25), (1,5)(2,28)(3,7)(4,30)(6,32)(8,26)(9,24)(10,14)(11,18)(12,16)(13,20)(15,22)(17,21)(19,23)(25,29)(27,31), (1,31)(2,32)(3,25)(4,26)(5,27)(6,28)(7,29)(8,30)(9,20)(10,21)(11,22)(12,23)(13,24)(14,17)(15,18)(16,19), (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) );
G=PermutationGroup([[(1,29,5,25),(2,30,6,26),(3,31,7,27),(4,32,8,28),(9,22,13,18),(10,23,14,19),(11,24,15,20),(12,17,16,21)], [(1,17),(2,18),(3,19),(4,20),(5,21),(6,22),(7,23),(8,24),(9,26),(10,27),(11,28),(12,29),(13,30),(14,31),(15,32),(16,25)], [(1,5),(2,28),(3,7),(4,30),(6,32),(8,26),(9,24),(10,14),(11,18),(12,16),(13,20),(15,22),(17,21),(19,23),(25,29),(27,31)], [(1,31),(2,32),(3,25),(4,26),(5,27),(6,28),(7,29),(8,30),(9,20),(10,21),(11,22),(12,23),(13,24),(14,17),(15,18),(16,19)], [(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)]])
50 conjugacy classes
| class | 1 | 2A | 2B | 2C | 2D | ··· | 2K | 2L | 2M | 2N | 4A | 4B | 4C | 4D | 4E | ··· | 4L | 4M | 4N | 4O | 8A | ··· | 8H | 8I | ··· | 8T |
| order | 1 | 2 | 2 | 2 | 2 | ··· | 2 | 2 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | ··· | 4 | 4 | 4 | 4 | 8 | ··· | 8 | 8 | ··· | 8 |
| size | 1 | 1 | 1 | 1 | 2 | ··· | 2 | 4 | 4 | 4 | 1 | 1 | 1 | 1 | 2 | ··· | 2 | 4 | 4 | 4 | 2 | ··· | 2 | 4 | ··· | 4 |
50 irreducible representations
| dim | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 4 |
| type | + | + | + | + | + | + | + | |||||
| image | C1 | C2 | C2 | C2 | C2 | C2 | C4 | C4 | C4 | D4 | C8○D4 | Q8○M4(2) |
| kernel | D4○(C22⋊C8) | C2×C22⋊C8 | C24.4C4 | (C22×C8)⋊C2 | C2×C8○D4 | C22×C4○D4 | C22×D4 | C22×Q8 | C2×C4○D4 | C4○D4 | C22 | C2 |
| # reps | 1 | 3 | 3 | 6 | 2 | 1 | 6 | 2 | 8 | 8 | 8 | 2 |
Matrix representation of D4○(C22⋊C8) ►in GL4(𝔽17) generated by
| 13 | 0 | 0 | 0 |
| 0 | 4 | 0 | 0 |
| 0 | 0 | 16 | 0 |
| 0 | 0 | 0 | 16 |
| 0 | 4 | 0 | 0 |
| 13 | 0 | 0 | 0 |
| 0 | 0 | 1 | 0 |
| 0 | 0 | 0 | 1 |
| 16 | 0 | 0 | 0 |
| 0 | 16 | 0 | 0 |
| 0 | 0 | 1 | 0 |
| 0 | 0 | 8 | 16 |
| 1 | 0 | 0 | 0 |
| 0 | 1 | 0 | 0 |
| 0 | 0 | 16 | 0 |
| 0 | 0 | 0 | 16 |
| 2 | 0 | 0 | 0 |
| 0 | 2 | 0 | 0 |
| 0 | 0 | 13 | 1 |
| 0 | 0 | 2 | 4 |
G:=sub<GL(4,GF(17))| [13,0,0,0,0,4,0,0,0,0,16,0,0,0,0,16],[0,13,0,0,4,0,0,0,0,0,1,0,0,0,0,1],[16,0,0,0,0,16,0,0,0,0,1,8,0,0,0,16],[1,0,0,0,0,1,0,0,0,0,16,0,0,0,0,16],[2,0,0,0,0,2,0,0,0,0,13,2,0,0,1,4] >;
D4○(C22⋊C8) in GAP, Magma, Sage, TeX
D_4\circ (C_2^2\rtimes C_8)
% in TeX
G:=Group("D4o(C2^2:C8)"); // GroupNames label
G:=SmallGroup(128,1612);
// by ID
G=gap.SmallGroup(128,1612);
# by ID
G:=PCGroup([7,-2,2,2,2,-2,2,-2,224,253,521,124]);
// Polycyclic
G:=Group<a,b,c,d,e|a^4=b^2=c^2=d^2=1,e^4=a^2,b*a*b=a^-1,a*c=c*a,a*d=d*a,a*e=e*a,b*c=c*b,b*d=d*b,b*e=e*b,e*c*e^-1=c*d=d*c,d*e=e*d>;
// generators/relations