Finite Group Databasebeta

C2×D9×#997 #72245966

order3456
automorphism?
homologyAbelianization (H1) = C22×C3 · Schur multiplier (H2) = C24

Aliases

direct productC2×D9×#997

Splittings

FittingC2×C9×H(5,𝔽2) ⋊ C2×C3
derivedC9×H(5,𝔽2) ⋊ C22×C3

Subgroups

subgroupG/H
center, hypercenterC22D9×C22⋊A4
commutator, cosocle, hypocenterC9×H(5,𝔽2)C22×C3
FrattiniC2×C3C2×D3×C22⋊A4
FittingC2×C9×H(5,𝔽2)C2×C3
socleC22×C3D3×C22⋊A4
LCSG ▷ C9×H(5,𝔽2)
UCSC1 ◁ C22

3727 conjugacy classes of subgroups; only the 89 normal subgroups are shown.

normal subgroups only

This group has 3727 conjugacy classes of subgroups — too many to draw. Only its 89 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) = 19
transitive degreeμt(G) = 144

A minimal faithful permutation representation — 3 generators on 19 points:

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

Conjugacy classes & character table

132 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC2×AGL(1,ℤ/9)×#997
maximal normal subgroup ofC2×AGL(1,ℤ/9)×#997

GAP

Past the SmallGroups library coverage — no SmallGroups id. Construct it from a minimal faithful permutation representation:

gap> G := Group((4,7,5)(8,9,10)(12,14)(13,17)(15,18)(16,19), (1,2)(4,8)(5,10)(11,18,19,13,12,14,17,16,15), (3,9,6,7)(4,5,8,10));