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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
2
and Q=
He
3
⋊C
2
Direct product G=N×Q with N=
C
2
and Q=
He
3
⋊C
2
d
ρ
Label
ID
C
2
×He
3
⋊C
2
18
3
C2xHe3:C2
108,28
Non-split extensions G=N.Q with N=
C
2
and Q=
He
3
⋊C
2
extension
φ:Q→Aut N
d
ρ
Label
ID
C
2
.(He
3
⋊C
2
) =
He
3
⋊
3
C
4
central extension (φ=1)
36
3
C2.(He3:C2)
108,11
×
⋊
ℤ
𝔽
○
≀
ℚ
◁