Go
Home
About
C
n
D
n
S
n
A
n
Degree
Linear
Irr Reps
Characters
×
⋊
.
○
≀
Extensions
1→N→G→Q→1 with N=
D
5
and Q=
D
4
Direct product G=N×Q with N=
D
5
and Q=
D
4
d
ρ
Label
ID
D
4
×D
5
20
4+
D4xD5
80,39
Non-split extensions G=N.Q with N=
D
5
and Q=
D
4
extension
φ:Q→Out N
d
ρ
Label
ID
D
5
.
1
D
4
=
C
4
⋊F
5
φ:
D
4
/
C
4
→
C
2
⊆ Out
D
5
20
4
D5.1D4
80,31
D
5
.
2
D
4
=
C
2
2
⋊F
5
φ:
D
4
/
C
2
2
→
C
2
⊆ Out
D
5
20
4+
D5.2D4
80,34
×
⋊
ℤ
𝔽
○
≀
ℚ
◁