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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
2
xC
7
:C
3
Direct product G=NxQ with N=
C
2
and Q=
C
2
xC
7
:C
3
d
ρ
Label
ID
C
2
2
xC
7
:C
3
28
C2^2xC7:C3
84,9
Non-split extensions G=N.Q with N=
C
2
and Q=
C
2
xC
7
:C
3
extension
φ:Q→Aut N
d
ρ
Label
ID
C
2
.(C
2
xC
7
:C
3
) =
C
4
xC
7
:C
3
central extension (φ=1)
28
3
C2.(C2xC7:C3)
84,2
x
:
Z
F
o
wr
Q
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