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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=
D
21
and Q=
C
2
3
Direct product G=NxQ with N=
D
21
and Q=
C
2
3
d
ρ
Label
ID
C
2
3
xD
21
168
C2^3xD21
336,227
Semidirect products G=N:Q with N=
D
21
and Q=
C
2
3
extension
φ:Q→Out N
d
ρ
Label
ID
D
21
:C
2
3
=
C
2
2
xS
3
xD
7
φ:
C
2
3
/
C
2
2
→
C
2
⊆ Out
D
21
84
D21:C2^3
336,219
x
:
Z
F
o
wr
Q
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