Finite Group Databasebeta
Cayley diagram

D3×C9 #268

order54
isoclinismisoclinic class of D3
automorphismAut(G) = C2×C3×D3 (order 36) · Inn(G) = D3 · Out(G) = C2×C3
holomorphG ⋊ Aut(G) = D32×AGL(1,ℤ/9)
homologyAbelianization (H1) = C2×C9 · Schur multiplier (H2) = C1

Aliases

direct productD3×C9
unambiguous semidirect productC3⋊(C2×C9)

Splittings

Fitting, SylowC3×C9 ⋊ C2
derivedC3 ⋊ C2×C9

Subgroups

subgroupG/H
center, hypercenterC9D3
commutator, hypocenterC3C2×C9
FrattiniC3C3×D3
FittingC3×C9C2
socle, cosocleC32C2×C3
prime radicalC3×D3C3
LCSG ▷ C3
UCSC1 ◁ C9

14 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 12
transitive degreeμt(G) = 18

A minimal faithful permutation representation — 2 generators on 12 points:

(2,3)(4,5,7,6,8,10,9,11,12);(1,2,3)

Conjugacy classes & character table

27 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD3×D9, C2×D3×C9, C9×D9, …
maximal normal subgroup ofD3×D9, C2×D3×C9, D3×C27, …
maximal quotient ofC9×Dic3, C2×D3×C9, C9×D9, …
outer automorphism group ofC81⋊C3, C2×C81⋊C3

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(54, 4);