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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
7
and Q=
C
18
Direct product G=N×Q with N=
D
7
and Q=
C
18
d
ρ
Label
ID
D
7
×C
18
126
2
D7xC18
252,12
Semidirect products G=N:Q with N=
D
7
and Q=
C
18
extension
φ:Q→Out N
d
ρ
Label
ID
D
7
⋊C
18
=
C
2
×C
7
⋊C
18
φ:
C
18
/
C
6
→
C
3
⊆ Out
D
7
126
6
D7:C18
252,7
×
⋊
ℤ
𝔽
○
≀
ℚ
◁