Extensions 1→N→G→Q→1 with N=C₂ and Q=C₅⋊D₂₀

Direct product G=N×Q with N=C₂ and Q=C₅⋊D₂₀

		d	ρ	Label	ID
C₂×C₅⋊D₂₀		40		C2xC5:D20	400,177

Non-split extensions G=N.Q with N=C₂ and Q=C₅⋊D₂₀

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.₁(C₅⋊D₂₀) = D₁₀⋊Dic₅	central extension (φ=1)	80		C2.1(C5:D20)	400,72
C₂.₂(C₅⋊D₂₀) = C₁₀.D₂₀	central extension (φ=1)	40		C2.2(C5:D20)	400,73
C₂.₃(C₅⋊D₂₀) = Dic₅⋊Dic₅	central extension (φ=1)	80		C2.3(C5:D20)	400,74
C₂.₄(C₅⋊D₂₀) = C₅⋊D₄₀	central stem extension (φ=1)	40	4+	C2.4(C5:D20)	400,65
C₂.₅(C₅⋊D₂₀) = C₅²⋊₃SD₁₆	central stem extension (φ=1)	80	4-	C2.5(C5:D20)	400,67
C₂.₆(C₅⋊D₂₀) = C₅²⋊₄SD₁₆	central stem extension (φ=1)	40	4+	C2.6(C5:D20)	400,68
C₂.₇(C₅⋊D₂₀) = C₅²⋊₃Q₁₆	central stem extension (φ=1)	80	4-	C2.7(C5:D20)	400,70

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