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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
7
and Q=
C
20
Direct product G=N×Q with N=
C
7
and Q=
C
20
d
ρ
Label
ID
C
140
140
1
C140
140,4
Semidirect products G=N:Q with N=
C
7
and Q=
C
20
extension
φ:Q→Aut N
d
ρ
Label
ID
C
7
⋊C
20
=
C
5
×Dic
7
φ:
C
20
/
C
10
→
C
2
⊆ Aut
C
7
140
2
C7:C20
140,2
×
⋊
ℤ
𝔽
○
≀
ℚ
◁