Extensions 1→N→G→Q→1 with N=C₂ and Q=C₅:D₄

Direct product G=NxQ with N=C₂ and Q=C₅:D₄

		d	ρ	Label	ID
C₂xC₅:D₄		40		C2xC5:D4	80,44

Non-split extensions G=N.Q with N=C₂ and Q=C₅:D₄

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.₁(C₅:D₄) = C₁₀.D₄	central extension (φ=1)	80		C2.1(C5:D4)	80,12
C₂.₂(C₅:D₄) = D₁₀:C₄	central extension (φ=1)	40		C2.2(C5:D4)	80,14
C₂.₃(C₅:D₄) = C₂³.D₅	central extension (φ=1)	40		C2.3(C5:D4)	80,19
C₂.₄(C₅:D₄) = D₄:D₅	central stem extension (φ=1)	40	4+	C2.4(C5:D4)	80,15
C₂.₅(C₅:D₄) = D₄.D₅	central stem extension (φ=1)	40	4-	C2.5(C5:D4)	80,16
C₂.₆(C₅:D₄) = Q₈:D₅	central stem extension (φ=1)	40	4+	C2.6(C5:D4)	80,17
C₂.₇(C₅:D₄) = C₅:Q₁₆	central stem extension (φ=1)	80	4-	C2.7(C5:D4)	80,18

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