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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=
C
5
×F
7
Direct product G=N×Q with N=
C
2
and Q=
C
5
×F
7
d
ρ
Label
ID
C
10
×F
7
70
6
C10xF7
420,17
Non-split extensions G=N.Q with N=
C
2
and Q=
C
5
×F
7
extension
φ:Q→Aut N
d
ρ
Label
ID
C
2
.(C
5
×F
7
) =
C
5
×C
7
⋊C
12
central extension (φ=1)
140
6
C2.(C5xF7)
420,1
×
⋊
ℤ
𝔽
○
≀
ℚ
◁