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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
⋊A
4
and Q=
C
2
2
Direct product G=N×Q with N=
C
9
⋊A
4
and Q=
C
2
2
d
ρ
Label
ID
C
2
2
×C
9
⋊A
4
108
C2^2xC9:A4
432,547
Semidirect products G=N:Q with N=
C
9
⋊A
4
and Q=
C
2
2
extension
φ:Q→Out N
d
ρ
Label
ID
C
9
⋊A
4
⋊C
2
2
=
C
2
×D
9
⋊A
4
φ:
C
2
2
/
C
2
→
C
2
⊆ Out
C
9
⋊A
4
54
6+
C9:A4:C2^2
432,539
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⋊
ℤ
𝔽
○
≀
ℚ
◁