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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=
D
9
and Q=
C
27
Direct product G=N×Q with N=
D
9
and Q=
C
27
d
ρ
Label
ID
D
9
×C
27
54
2
D9xC27
486,14
Semidirect products G=N:Q with N=
D
9
and Q=
C
27
extension
φ:Q→Out N
d
ρ
Label
ID
D
9
⋊C
27
=
C
9
⋊C
54
φ:
C
27
/
C
9
→
C
3
⊆ Out
D
9
54
6
D9:C27
486,30
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⋊
ℤ
𝔽
○
≀
ℚ
◁