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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
6
and Q=
C
9
2
Direct product G=N×Q with N=
C
6
and Q=
C
9
2
d
ρ
Label
ID
C
3
×C
9
×C
18
486
C3xC9xC18
486,190
Non-split extensions G=N.Q with N=
C
6
and Q=
C
9
2
extension
φ:Q→Aut N
d
ρ
Label
ID
C
6
.
1
C
9
2
=
C
2
×C
3
.C
9
2
central extension (φ=1)
486
C6.1C9^2
486,62
C
6
.
2
C
9
2
=
C
2
×C
27
⋊
2
C
9
central extension (φ=1)
486
C6.2C9^2
486,71
×
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𝔽
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≀
ℚ
◁