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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
142
and Q=
C
2
Direct product G=N×Q with N=
C
142
and Q=
C
2
d
ρ
Label
ID
C
2
×C
142
284
C2xC142
284,4
Semidirect products G=N:Q with N=
C
142
and Q=
C
2
extension
φ:Q→Aut N
d
ρ
Label
ID
C
142
⋊C
2
=
D
142
φ:
C
2
/
C
1
→
C
2
⊆ Aut
C
142
142
2+
C142:C2
284,3
Non-split extensions G=N.Q with N=
C
142
and Q=
C
2
extension
φ:Q→Aut N
d
ρ
Label
ID
C
142
.C
2
=
Dic
71
φ:
C
2
/
C
1
→
C
2
⊆ Aut
C
142
284
2-
C142.C2
284,1
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⋊
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𝔽
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≀
ℚ
◁