Finite Group Databasebeta

C9×#3938 #13083767

order1440
automorphism?
homologyAbelianization (H1) = C2×C4×C9 · Schur multiplier (H2) = C22

Aliases

direct productC9×#3938

Splittings

FittingC5×C9×C22⋊C4 ⋊ C2
HallC5×C9 ⋊ #99
SylowC5 ⋊ C9×#99

Subgroups

subgroupG/H
centerC2×C9#685
commutatorC22×C5C2×C4×C9
FrattiniC23×C3C2×C3×D5
FittingC5×C9×C22⋊C4C2
socleC2×C3×C5C3×C22⋊C4
prime radicalC2×C3×C22⋊D5C2×C3
cosocleC23×C3×C5C22×C3
hypercenterC9×C22⋊C4D5
hypocenterC5C9×#99
LCSG ▷ C22×C5 ▷ C2×C5 ▷ C5
UCSC1 ◁ C2×C9 ◁ C23×C9 ◁ C9×C22⋊C4

156 conjugacy classes of subgroups; only the 57 normal subgroups are shown.

normal subgroups only

This group has 156 conjugacy classes of subgroups — too many to draw. Only its 57 normal subgroups are shown.

Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.

Full subgroup data →

Presentation

minimal degreeμ(G) = 22
transitive degreeμt(G) = 360

A minimal faithful permutation representation — 2 generators on 22 points:

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

Conjugacy classes & character table

279 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1440, 84);