Finite Group Databasebeta

D9⋊#997 #13164652

order1728
automorphism?
homologyAbelianization (H1) = C2×C3 · Schur multiplier (H2) = C23

Aliases

unambiguous semidirect productD9⋊#997

Splittings

Fitting, derivedC9×H(5,𝔽2) ⋊ C2×C3

Subgroups

subgroupG/H
center, hypercenterC2D9⋊(C22⋊A4)
commutator, Fitting, cosocle, hypocenterC9×H(5,𝔽2)C2×C3
Frattini, socleC2×C3D3×C22⋊A4
LCSG ▷ C9×H(5,𝔽2)
UCSC1 ◁ C2

590 conjugacy classes of subgroups; only the 36 normal subgroups are shown.

normal subgroups only

This group has 590 conjugacy classes of subgroups — too many to draw. Only its 36 normal subgroups are shown.

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

Full subgroup data →

Presentation

transitive degreeμt(G) = 72

Polycyclic presentation:

2,3,2^4,3,2,3|g^3=i^2,g^a=g^2i,i^a=i^2,c^b=d,d^b=cd,e^b=f,f^b=ef,g^b=gi,f^c=fh,e^d=eh

Conjugacy classes & character table

50 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofAGL(1,ℤ/9)×#997, C2×D9⋊#997
maximal normal subgroup ofAGL(1,ℤ/9)×#997, C2×D9⋊#997
maximal quotient ofC2×D9⋊#997

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1728, 30715);