Finite Group Databasebeta
Cayley diagram

C2×C9×Dic5 #67088

order360
isoclinismisoclinic class of D5
automorphismAut(G) = C2×C3×D4×AGL(1,𝔽5) (order 960) · Inn(G) = D5 · Out(G) = C22×C3×D4
homologyAbelianization (H1) = C2×C4×C9 · Schur multiplier (H2) = C2

Aliases

direct productC2×C9×Dic5

Splittings

derived, SylowC5 ⋊ C2×C4×C9
HallC5×C9 ⋊ C2×C4

Subgroups

subgroupG/H
center, hypercenterC22×C9D5
commutator, hypocenterC5C2×C4×C9
FrattiniC2×C3C2×C3×D5
FittingC22×C5×C9C2
socle, prime radicalC22×C3×C5C2×C3
cosocleC2×C3×C5C22×C3
LCSG ▷ C5
UCSC1 ◁ C22×C9

48 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 20
transitive degreeμt(G) = 360

A minimal faithful permutation representation — 2 generators on 20 points:

(1,2)(3,4,5,6)(8,9)(10,11)(12,19,18,14,13,20,17,16,15);(1,2)(7,8,10,11,9)

Conjugacy classes & character table

144 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofDic5×Dic9, #10623557, Dic9⋊Dic5, …
maximal normal subgroup ofDic5×Dic9, #10623557, Dic9⋊Dic5, …
maximal quotient ofC2×C9×#168, C9×#681, C4×C9×Dic5, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(360, 18);