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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
and Q=
Dic
7
Direct product G=N×Q with N=
C
9
and Q=
Dic
7
d
ρ
Label
ID
C
9
×Dic
7
252
2
C9xDic7
252,4
Semidirect products G=N:Q with N=
C
9
and Q=
Dic
7
extension
φ:Q→Aut N
d
ρ
Label
ID
C
9
⋊Dic
7
=
Dic
63
φ:
Dic
7
/
C
14
→
C
2
⊆ Aut
C
9
252
2-
C9:Dic7
252,5
×
⋊
ℤ
𝔽
○
≀
ℚ
◁