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C
n
D
n
S
n
A
n
Degree
Linear
Irr Reps
Characters
x
:
.
o
wr
Extensions
1→N→G→Q→1 with N=
C
2
and Q=
C
9
:F
5
Direct product G=NxQ with N=
C
2
and Q=
C
9
:F
5
d
ρ
Label
ID
C
2
xC
9
:F
5
90
4
C2xC9:F5
360,44
Non-split extensions G=N.Q with N=
C
2
and Q=
C
9
:F
5
extension
φ:Q→Aut N
d
ρ
Label
ID
C
2
.(C
9
:F
5
) =
C
45
:C
8
central extension (φ=1)
360
4
C2.(C9:F5)
360,6
x
:
Z
F
o
wr
Q
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