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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
89
and Q=
C
2
Direct product G=N×Q with N=
D
89
and Q=
C
2
d
ρ
Label
ID
D
178
178
2+
D178
356,4
Non-split extensions G=N.Q with N=
D
89
and Q=
C
2
extension
φ:Q→Out N
d
ρ
Label
ID
D
89
.C
2
=
C
89
⋊C
4
φ:
C
2
/
C
1
→
C
2
⊆ Out
D
89
89
4+
D89.C2
356,3
×
⋊
ℤ
𝔽
○
≀
ℚ
◁