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

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

		d	ρ	Label	ID
C₂×Dic₉		72		C2xDic9	72,7

Semidirect products G=N:Q with N=Dic₉ and Q=C₂

extension	φ:Q→Out N	d	ρ	Label	ID
Dic₉⋊C₂ = C₉⋊D₄	φ: C₂/C₁ → C₂ ⊆ Out Dic₉	36	2	Dic9:C2	72,8
Dic₉⋊₂C₂ = C₄×D₉	φ: trivial image	36	2	Dic9:2C2	72,5

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

extension	φ:Q→Out N	d	ρ	Label	ID
Dic₉.C₂ = Dic₁₈	φ: C₂/C₁ → C₂ ⊆ Out Dic₉	72	2-	Dic9.C2	72,4

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