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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
3
and Q=
D
7
Direct product G=NxQ with N=
C
3
and Q=
D
7
d
ρ
Label
ID
C
3
xD
7
21
2
C3xD7
42,4
Semidirect products G=N:Q with N=
C
3
and Q=
D
7
extension
φ:Q→Aut N
d
ρ
Label
ID
C
3
:D
7
=
D
21
φ:
D
7
/
C
7
→
C
2
⊆ Aut
C
3
21
2+
C3:D7
42,5
x
:
Z
F
o
wr
Q
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