Extensions 1→N→G→Q→1 with N=C₂ and Q=C₂₁⋊₇D₄

Direct product G=N×Q with N=C₂ and Q=C₂₁⋊₇D₄

		d	ρ	Label	ID
C₂×C₂₁⋊₇D₄		168		C2xC21:7D4	336,203

Non-split extensions G=N.Q with N=C₂ and Q=C₂₁⋊₇D₄

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.₁(C₂₁⋊₇D₄) = C₄₂.₄Q₈	central extension (φ=1)	336		C2.1(C21:7D4)	336,98
C₂.₂(C₂₁⋊₇D₄) = C₂.D₈₄	central extension (φ=1)	168		C2.2(C21:7D4)	336,100
C₂.₃(C₂₁⋊₇D₄) = C₄₂.₃₈D₄	central extension (φ=1)	168		C2.3(C21:7D4)	336,105
C₂.₄(C₂₁⋊₇D₄) = D₄⋊D₂₁	central stem extension (φ=1)	168	4+	C2.4(C21:7D4)	336,101
C₂.₅(C₂₁⋊₇D₄) = D₄.D₂₁	central stem extension (φ=1)	168	4-	C2.5(C21:7D4)	336,102
C₂.₆(C₂₁⋊₇D₄) = Q₈⋊₂D₂₁	central stem extension (φ=1)	168	4+	C2.6(C21:7D4)	336,103
C₂.₇(C₂₁⋊₇D₄) = C₂₁⋊₇Q₁₆	central stem extension (φ=1)	336	4-	C2.7(C21:7D4)	336,104

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