Finite Group Databasebeta
Cayley diagram

C9×D19 #66786

order342
isoclinismisoclinic class of D19
automorphism?
homologyAbelianization (H1) = C2×C9 · Schur multiplier (H2) = C1

Aliases

direct productC9×D19

Splittings

Fitting, HallC9×C19 ⋊ C2
derived, SylowC19 ⋊ C2×C9

Subgroups

subgroupG/H
center, hypercenterC9D19
commutator, hypocenterC19C2×C9
FrattiniC3C3×D19
FittingC9×C19C2
socle, cosocleC3×C19C2×C3
prime radicalC3×D19C3
LCSG ▷ C19
UCSC1 ◁ C9

12 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 28
transitive degreeμt(G) = 171

A minimal faithful permutation representation — 2 generators on 28 points:

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

Conjugacy classes & character table

99 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD9×D19, C2×C9×D19, #10587018⋊C2, …
maximal normal subgroup ofD9×D19, C2×C9×D19, #10587018⋊C2, …
maximal quotient ofC9×Dic19, C2×C9×D19, C27×D19, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(342, 4);