Finite Group Databasebeta

C4⋊(Dic7⋊C9) #11758845

order1008
automorphism?
homologyAbelianization (H1) = C2×C4×C9 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect productC4⋊(Dic7⋊C9)
unambiguous semidirect product(C4⋊Dic7)⋊C9

Splittings

HallC4⋊Dic7 ⋊ C9
HallC7⋊C9 ⋊ C4⋊C4
SylowC7 ⋊ C9×C4⋊C4

Subgroups

subgroupG/H
center, FrattiniC22×C3C2×AGL(1,𝔽7)
commutatorC2×C7C2×C4×C9
FittingC2×C3×C4×C7C2×C3
socle, prime radical, cosocleC22×C3×C7C22×C3
hypercenterC2×C3×C4AGL(1,𝔽7)
hypocenterC7C9×C4⋊C4
LCSG ▷ C2×C7 ▷ C7
UCSC1 ◁ C22×C3 ◁ C2×C3×C4

78 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 1008

Polycyclic presentation:

2^2,3,2^2,3,7|a^2=e,b^2=d,c^3=f,b^a=bd,g^a=g^6,g^c=g^2

Conjugacy classes & character table

114 conjugacy classes — view the full character table.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1008, 16);