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About
C
n
D
n
S
n
A
n
Degree
Linear
Irr Reps
Characters
×
⋊
.
○
≀
Extensions
1→N→G→Q→1 with N=
C
3
and Q=
C
90
Direct product G=N×Q with N=
C
3
and Q=
C
90
d
ρ
Label
ID
C
3
×C
90
270
C3xC90
270,20
Semidirect products G=N:Q with N=
C
3
and Q=
C
90
extension
φ:Q→Aut N
d
ρ
Label
ID
C
3
⋊C
90
=
S
3
×C
45
φ:
C
90
/
C
45
→
C
2
⊆ Aut
C
3
90
2
C3:C90
270,9
×
⋊
ℤ
𝔽
○
≀
ℚ
◁