Extensions 1→N→G→Q→1 with N=C₂ and Q=C₂×Dic₉

Direct product G=N×Q with N=C₂ and Q=C₂×Dic₉

		d	ρ	Label	ID
C₂²×Dic₉		144		C2^2xDic9	144,45

Non-split extensions G=N.Q with N=C₂ and Q=C₂×Dic₉

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.₁(C₂×Dic₉) = C₂×C₉⋊C₈	central extension (φ=1)	144		C2.1(C2xDic9)	144,9
C₂.₂(C₂×Dic₉) = C₄×Dic₉	central extension (φ=1)	144		C2.2(C2xDic9)	144,11
C₂.₃(C₂×Dic₉) = C₄.Dic₉	central stem extension (φ=1)	72	2	C2.3(C2xDic9)	144,10
C₂.₄(C₂×Dic₉) = C₄⋊Dic₉	central stem extension (φ=1)	144		C2.4(C2xDic9)	144,13
C₂.₅(C₂×Dic₉) = C₁₈.D₄	central stem extension (φ=1)	72		C2.5(C2xDic9)	144,19

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