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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
11
and Q=
D
11
Direct product G=N×Q with N=
C
11
and Q=
D
11
d
ρ
Label
ID
C
11
×D
11
22
2
C11xD11
242,3
Semidirect products G=N:Q with N=
C
11
and Q=
D
11
extension
φ:Q→Aut N
d
ρ
Label
ID
C
11
⋊D
11
=
C
11
⋊D
11
φ:
D
11
/
C
11
→
C
2
⊆ Aut
C
11
121
C11:D11
242,4
Non-split extensions G=N.Q with N=
C
11
and Q=
D
11
extension
φ:Q→Aut N
d
ρ
Label
ID
C
11
.D
11
=
D
121
φ:
D
11
/
C
11
→
C
2
⊆ Aut
C
11
121
2+
C11.D11
242,1
×
⋊
ℤ
𝔽
○
≀
ℚ
◁