Extensions 1→N→G→Q→1 with N=C₉ and Q=D₂₁

Direct product G=N×Q with N=C₉ and Q=D₂₁

		d	ρ	Label	ID
C₉×D₂₁		126	2	C9xD21	378,37

Semidirect products G=N:Q with N=C₉ and Q=D₂₁

extension	φ:Q→Aut N	d	ρ	Label	ID
C₉⋊D₂₁ = C₃⋊D₆₃	φ: D₂₁/C₂₁ → C₂ ⊆ Aut C₉	189		C9:D21	378,42

Non-split extensions G=N.Q with N=C₉ and Q=D₂₁

extension	φ:Q→Aut N	d	ρ	Label	ID
C₉.D₂₁ = D₁₈₉	φ: D₂₁/C₂₁ → C₂ ⊆ Aut C₉	189	2+	C9.D21	378,5

⋊

ℤ

𝔽

○

≀

ℚ

◁

Extensions 1→N→G→Q→1 with N=C9 and Q=D21