Extensions 1→N→G→Q→1 with N=C₂ and Q=D₅×D₉

Direct product G=N×Q with N=C₂ and Q=D₅×D₉

		d	ρ	Label	ID
C₂×D₅×D₉		90	4+	C2xD5xD9	360,45

Non-split extensions G=N.Q with N=C₂ and Q=D₅×D₉

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.₁(D₅×D₉) = D₉×Dic₅	central extension (φ=1)	180	4-	C2.1(D5xD9)	360,8
C₂.₂(D₅×D₉) = D₉₀.C₂	central extension (φ=1)	180	4+	C2.2(D5xD9)	360,9
C₂.₃(D₅×D₉) = D₅×Dic₉	central extension (φ=1)	180	4-	C2.3(D5xD9)	360,11
C₂.₄(D₅×D₉) = C₄₅⋊Q₈	central stem extension (φ=1)	360	4-	C2.4(D5xD9)	360,7
C₂.₅(D₅×D₉) = C₅⋊D₃₆	central stem extension (φ=1)	180	4+	C2.5(D5xD9)	360,10
C₂.₆(D₅×D₉) = C₄₅⋊D₄	central stem extension (φ=1)	180	4-	C2.6(D5xD9)	360,12
C₂.₇(D₅×D₉) = C₉⋊D₂₀	central stem extension (φ=1)	180	4+	C2.7(D5xD9)	360,13

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