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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
2
and Q=
C
100
Direct product G=N×Q with N=
C
2
2
and Q=
C
100
d
ρ
Label
ID
C
2
2
×C
100
400
C2^2xC100
400,45
Semidirect products G=N:Q with N=
C
2
2
and Q=
C
100
extension
φ:Q→Aut N
d
ρ
Label
ID
C
2
2
⋊C
100
=
C
2
2
⋊C
4
×C
25
φ:
C
100
/
C
50
→
C
2
⊆ Aut
C
2
2
200
C2^2:C100
400,21
Non-split extensions G=N.Q with N=
C
2
2
and Q=
C
100
extension
φ:Q→Aut N
d
ρ
Label
ID
C
2
2
.C
100
=
M
4
(2)×C
25
φ:
C
100
/
C
50
→
C
2
⊆ Aut
C
2
2
200
2
C2^2.C100
400,24
×
⋊
ℤ
𝔽
○
≀
ℚ
◁