Finite Group Databasebeta

C2×C9⋊SL(2,ℤ/4) #11722375

order864
isoclinismisoclinic class of C9⋊S4
automorphism?
homologyAbelianization (H1) = C2×C4 · Schur multiplier (H2) = C22×C3

Aliases

direct productC2×C9⋊SL(2,ℤ/4)
unambiguous semidirect product(C2×C9)⋊SL(2,ℤ/4)
unambiguous semidirect product(C2×A4)⋊Dic9

Splittings

derivedC9×A4 ⋊ C2×C4

Subgroups

subgroupG/H
center, hypercenterC22C9⋊S4
commutator, hypocenterC9×A4C2×C4
FrattiniC2×C3C2×C3⋊S4
FittingC24×C9D3
socleC24×C3C3⋊D3
prime radicalC22×C3×A4D3
cosocleC2×C9×A4C22
LCSG ▷ C9×A4
UCSC1 ◁ C22

253 conjugacy classes of subgroups; only the 68 normal subgroups are shown.

normal subgroups only

This group has 253 conjugacy classes of subgroups — too many to draw. Only its 68 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) = 216

Conjugacy classes & character table

84 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofDic9×SL(2,ℤ/4), (C2×D9)⋊SL(2,ℤ/4), (C2×S4)⋊Dic9, …
maximal normal subgroup ofDic9×SL(2,ℤ/4), (C2×D9)⋊SL(2,ℤ/4), (C2×S4)⋊Dic9, …
maximal quotient ofC2×C9⋊(A4⋊C8), #13146965, C4×C9⋊SL(2,ℤ/4), …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(864, 2342);