Extensions 1→N→G→Q→1 with N=C₂ and Q=D₄₂

Direct product G=N×Q with N=C₂ and Q=D₄₂

		d	ρ	Label	ID
C₂²×D₂₁		84		C2^2xD21	168,56

Non-split extensions G=N.Q with N=C₂ and Q=D₄₂

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.₁D₄₂ = C₄×D₂₁	central extension (φ=1)	84	2	C2.1D42	168,35
C₂.₂D₄₂ = C₂×Dic₂₁	central extension (φ=1)	168		C2.2D42	168,37
C₂.₃D₄₂ = Dic₄₂	central stem extension (φ=1)	168	2-	C2.3D42	168,34
C₂.₄D₄₂ = D₈₄	central stem extension (φ=1)	84	2+	C2.4D42	168,36
C₂.₅D₄₂ = C₂₁⋊₇D₄	central stem extension (φ=1)	84	2	C2.5D42	168,38

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