Extensions 1→N→G→Q→1 with N=C₉ and Q=C₂₀

Direct product G=N×Q with N=C₉ and Q=C₂₀

		d	ρ	Label	ID
C₁₈₀		180	1	C180	180,4

Semidirect products G=N:Q with N=C₉ and Q=C₂₀

extension	φ:Q→Aut N	d	ρ	Label	ID
C₉⋊C₂₀ = C₅×Dic₉	φ: C₂₀/C₁₀ → C₂ ⊆ Aut C₉	180	2	C9:C20	180,1

׿

×

⋊

ℤ

𝔽

○

≀

ℚ

◁