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About
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
2
and Q=
C
18
Direct product G=NxQ with N=
C
2
2
and Q=
C
18
d
ρ
Label
ID
C
2
2
xC
18
72
C2^2xC18
72,18
Semidirect products G=N:Q with N=
C
2
2
and Q=
C
18
extension
φ:Q→Aut N
d
ρ
Label
ID
C
2
2
:C
18
=
C
2
xC
3
.A
4
φ:
C
18
/
C
6
→
C
3
⊆ Aut
C
2
2
18
3
C2^2:C18
72,16
C
2
2
:
2
C
18
=
D
4
xC
9
φ:
C
18
/
C
9
→
C
2
⊆ Aut
C
2
2
36
2
C2^2:2C18
72,10
x
:
Z
F
o
wr
Q
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