Finite Group Databasebeta

D5×A4×D9 #72247490

order2160
automorphism?
homologyAbelianization (H1) = C22×C3 · Schur multiplier (H2) = C22

Aliases

direct productD5×A4×D9

Splittings

Fitting, derivedC22×C5×C9 ⋊ C22×C3
SylowC5 ⋊ C2×A4×D9

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC22×C5×C9C22×C3
FrattiniC3D3×D5×A4
socleC22×C3×C5C2×C3×D3
LCSG ▷ C22×C5×C9
UCSC1

250 conjugacy classes of subgroups; only the 39 normal subgroups are shown.

normal subgroups only

This group has 250 conjugacy classes of subgroups — too many to draw. Only its 39 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) = 18
transitive degreeμt(G) = 180

A minimal faithful permutation representation — 2 generators on 18 points:

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

Conjugacy classes & character table

96 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD5×A4×AGL(1,ℤ/9), A4×D9×AGL(1,𝔽5), D5×D9×S4, …
maximal normal subgroup ofD5×A4×AGL(1,ℤ/9), A4×D9×AGL(1,𝔽5), D5×D9×S4, …

GAP

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

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