Extensions 1→N→G→Q→1 with N=C2 and Q=D7

Direct product G=N×Q with N=C2 and Q=D7
dρLabelID
D14142+D1428,3


Non-split extensions G=N.Q with N=C2 and Q=D7
extensionφ:Q→Aut NdρLabelID
C2.D7 = Dic7central extension (φ=1)282-C2.D728,1

׿
×
𝔽