Extensions 1→N→G→Q→1 with N=C₂ and Q=C₄×D₉

Direct product G=N×Q with N=C₂ and Q=C₄×D₉

		d	ρ	Label	ID
C₂×C₄×D₉		72		C2xC4xD9	144,38

Non-split extensions G=N.Q with N=C₂ and Q=C₄×D₉

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.₁(C₄×D₉) = C₈×D₉	central extension (φ=1)	72	2	C2.1(C4xD9)	144,5
C₂.₂(C₄×D₉) = C₄×Dic₉	central extension (φ=1)	144		C2.2(C4xD9)	144,11
C₂.₃(C₄×D₉) = C₈⋊D₉	central stem extension (φ=1)	72	2	C2.3(C4xD9)	144,6
C₂.₄(C₄×D₉) = Dic₉⋊C₄	central stem extension (φ=1)	144		C2.4(C4xD9)	144,12
C₂.₅(C₄×D₉) = D₁₈⋊C₄	central stem extension (φ=1)	72		C2.5(C4xD9)	144,14

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