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## G = C22×M4(2)  order 64 = 26

### Direct product of C22 and M4(2)

direct product, p-group, metabelian, nilpotent (class 2), monomial

Aliases: C22×M4(2), C84C23, C24.5C4, C4.15C24, C4(C2×M4(2)), (C2×C4)M4(2), (C22×C8)⋊12C2, (C2×C8)⋊15C22, (C22×C4).18C4, C23.35(C2×C4), C4.31(C22×C4), C2.10(C23×C4), (C23×C4).11C2, (C2×C4).161C23, C22.27(C22×C4), (C22×C4).127C22, (C2×C4).77(C2×C4), (C2×C4)(C2×M4(2)), SmallGroup(64,247)

Series: Derived Chief Lower central Upper central Jennings

 Derived series C1 — C2 — C22×M4(2)
 Chief series C1 — C2 — C4 — C2×C4 — C22×C4 — C23×C4 — C22×M4(2)
 Lower central C1 — C2 — C22×M4(2)
 Upper central C1 — C22×C4 — C22×M4(2)
 Jennings C1 — C2 — C2 — C4 — C22×M4(2)

Generators and relations for C22×M4(2)
G = < a,b,c,d | a2=b2=c8=d2=1, ab=ba, ac=ca, ad=da, bc=cb, bd=db, dcd=c5 >

Subgroups: 169 in 149 conjugacy classes, 129 normal (9 characteristic)
C1, C2, C2 [×6], C2 [×4], C4, C4 [×7], C22 [×11], C22 [×12], C8 [×8], C2×C4 [×28], C23, C23 [×6], C23 [×4], C2×C8 [×12], M4(2) [×16], C22×C4 [×2], C22×C4 [×12], C24, C22×C8 [×2], C2×M4(2) [×12], C23×C4, C22×M4(2)
Quotients: C1, C2 [×15], C4 [×8], C22 [×35], C2×C4 [×28], C23 [×15], M4(2) [×4], C22×C4 [×14], C24, C2×M4(2) [×6], C23×C4, C22×M4(2)

Smallest permutation representation of C22×M4(2)
On 32 points
Generators in S32
(1 10)(2 11)(3 12)(4 13)(5 14)(6 15)(7 16)(8 9)(17 32)(18 25)(19 26)(20 27)(21 28)(22 29)(23 30)(24 31)
(1 30)(2 31)(3 32)(4 25)(5 26)(6 27)(7 28)(8 29)(9 22)(10 23)(11 24)(12 17)(13 18)(14 19)(15 20)(16 21)
(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)
(1 30)(2 27)(3 32)(4 29)(5 26)(6 31)(7 28)(8 25)(9 18)(10 23)(11 20)(12 17)(13 22)(14 19)(15 24)(16 21)

G:=sub<Sym(32)| (1,10)(2,11)(3,12)(4,13)(5,14)(6,15)(7,16)(8,9)(17,32)(18,25)(19,26)(20,27)(21,28)(22,29)(23,30)(24,31), (1,30)(2,31)(3,32)(4,25)(5,26)(6,27)(7,28)(8,29)(9,22)(10,23)(11,24)(12,17)(13,18)(14,19)(15,20)(16,21), (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), (1,30)(2,27)(3,32)(4,29)(5,26)(6,31)(7,28)(8,25)(9,18)(10,23)(11,20)(12,17)(13,22)(14,19)(15,24)(16,21)>;

G:=Group( (1,10)(2,11)(3,12)(4,13)(5,14)(6,15)(7,16)(8,9)(17,32)(18,25)(19,26)(20,27)(21,28)(22,29)(23,30)(24,31), (1,30)(2,31)(3,32)(4,25)(5,26)(6,27)(7,28)(8,29)(9,22)(10,23)(11,24)(12,17)(13,18)(14,19)(15,20)(16,21), (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), (1,30)(2,27)(3,32)(4,29)(5,26)(6,31)(7,28)(8,25)(9,18)(10,23)(11,20)(12,17)(13,22)(14,19)(15,24)(16,21) );

G=PermutationGroup([(1,10),(2,11),(3,12),(4,13),(5,14),(6,15),(7,16),(8,9),(17,32),(18,25),(19,26),(20,27),(21,28),(22,29),(23,30),(24,31)], [(1,30),(2,31),(3,32),(4,25),(5,26),(6,27),(7,28),(8,29),(9,22),(10,23),(11,24),(12,17),(13,18),(14,19),(15,20),(16,21)], [(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)], [(1,30),(2,27),(3,32),(4,29),(5,26),(6,31),(7,28),(8,25),(9,18),(10,23),(11,20),(12,17),(13,22),(14,19),(15,24),(16,21)])

40 conjugacy classes

 class 1 2A ··· 2G 2H 2I 2J 2K 4A ··· 4H 4I 4J 4K 4L 8A ··· 8P order 1 2 ··· 2 2 2 2 2 4 ··· 4 4 4 4 4 8 ··· 8 size 1 1 ··· 1 2 2 2 2 1 ··· 1 2 2 2 2 2 ··· 2

40 irreducible representations

 dim 1 1 1 1 1 1 2 type + + + + image C1 C2 C2 C2 C4 C4 M4(2) kernel C22×M4(2) C22×C8 C2×M4(2) C23×C4 C22×C4 C24 C22 # reps 1 2 12 1 14 2 8

Matrix representation of C22×M4(2) in GL4(𝔽17) generated by

 16 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1
,
 1 0 0 0 0 16 0 0 0 0 1 0 0 0 0 1
,
 13 0 0 0 0 16 0 0 0 0 13 2 0 0 11 4
,
 16 0 0 0 0 1 0 0 0 0 1 0 0 0 4 16
G:=sub<GL(4,GF(17))| [16,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],[1,0,0,0,0,16,0,0,0,0,1,0,0,0,0,1],[13,0,0,0,0,16,0,0,0,0,13,11,0,0,2,4],[16,0,0,0,0,1,0,0,0,0,1,4,0,0,0,16] >;

C22×M4(2) in GAP, Magma, Sage, TeX

C_2^2\times M_4(2)
% in TeX

G:=Group("C2^2xM4(2)");
// GroupNames label

G:=SmallGroup(64,247);
// by ID

G=gap.SmallGroup(64,247);
# by ID

G:=PCGroup([6,-2,2,2,2,-2,-2,96,409,88]);
// Polycyclic

G:=Group<a,b,c,d|a^2=b^2=c^8=d^2=1,a*b=b*a,a*c=c*a,a*d=d*a,b*c=c*b,b*d=d*b,d*c*d=c^5>;
// generators/relations

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