Extensions 1→N→G→Q→1 with N=C₂² and Q=D₉

Direct product G=N×Q with N=C₂² and Q=D₉

		d	ρ	Label	ID
C₂²×D₉		36		C2^2xD9	72,17

Semidirect products G=N:Q with N=C₂² and Q=D₉

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂²⋊D₉ = C₃.S₄	φ: D₉/C₃ → S₃ ⊆ Aut C₂²	18	6+	C2^2:D9	72,15
C₂²⋊₂D₉ = C₉⋊D₄	φ: D₉/C₉ → C₂ ⊆ Aut C₂²	36	2	C2^2:2D9	72,8

Non-split extensions G=N.Q with N=C₂² and Q=D₉

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂².D₉ = C₂×Dic₉	central extension (φ=1)	72		C2^2.D9	72,7

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Extensions 1→N→G→Q→1 with N=C22 and Q=D9