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C
n
D
n
S
n
A
n
Degree
Linear
Irr Reps
Characters
×
⋊
.
○
≀
Extensions
1→N→G→Q→1 with N=
C
9
2
⋊
4
C
3
and Q=
C
2
Direct product G=N×Q with N=
C
9
2
⋊
4
C
3
and Q=
C
2
d
ρ
Label
ID
C
2
×C
9
2
⋊
4
C
3
162
C2xC9^2:4C3
486,203
Semidirect products G=N:Q with N=
C
9
2
⋊
4
C
3
and Q=
C
2
extension
φ:Q→Out N
d
ρ
Label
ID
C
9
2
⋊
4
C
3
⋊C
2
=
C
9
2
⋊
4
C
6
φ:
C
2
/
C
1
→
C
2
⊆ Out
C
9
2
⋊
4
C
3
81
C9^2:4C3:C2
486,155
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⋊
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≀
ℚ
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