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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=
Dic
40
Direct product G=NxQ with N=
C
2
and Q=
Dic
40
d
ρ
Label
ID
C
2
xDic
40
320
C2xDic40
320,532
Non-split extensions G=N.Q with N=
C
2
and Q=
Dic
40
extension
φ:Q→Aut N
d
ρ
Label
ID
C
2
.
1
Dic
40
=
C
40
.
78
D
4
central extension (φ=1)
320
C2.1Dic40
320,61
C
2
.
2
Dic
40
=
C
80
:
13
C
4
central extension (φ=1)
320
C2.2Dic40
320,62
x
:
Z
F
o
wr
Q
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