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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=
D
25
Direct product G=N×Q with N=
C
9
and Q=
D
25
d
ρ
Label
ID
C
9
×D
25
225
2
C9xD25
450,2
Semidirect products G=N:Q with N=
C
9
and Q=
D
25
extension
φ:Q→Aut N
d
ρ
Label
ID
C
9
⋊D
25
=
D
225
φ:
D
25
/
C
25
→
C
2
⊆ Aut
C
9
225
2+
C9:D25
450,3
×
⋊
ℤ
𝔽
○
≀
ℚ
◁