Finite Group Databasebeta

C9⋊C81 #10624531

order729
nilpotency class2
isoclinismisoclinic class of H(3,𝔽3)
automorphism?
homologyAbelianization (H1) = C3×C81 · Schur multiplier (H2) = C3

Aliases

unambiguous semidirect productC9⋊C81

Subgroups

subgroupG/H
center, Frattini, cosocleC3×C27C32
commutatorC3C3×C81
socle, prime radicalC32C3×C27
LCSG ▷ C3 ▷ C1
UCSC1 ◁ C3×C27 ◁ G
LECSG ▷ C3×C27 ▷ C9 ▷ C3 ▷ C1

35 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 729

Polycyclic presentation:

3^6|a^3=d,b^3=c,d^3=e,e^3=f,b^a=bc

Conjugacy classes & character table

297 conjugacy classes — view the full character table.

Relationships

Fitting subgroup ofD9⋊C81
maximal subgroup ofC2×C9⋊C81, D9⋊C81, #14546334, …
maximal normal subgroup ofC2×C9⋊C81, D9⋊C81, #14546334, …
maximal quotient ofC2×C9⋊C81, #14546334, #14546336, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(729, 91);