Let 𝛼₀ ∈ ℂ \ {0}, 𝐴 and 𝐵 be Banach function algebras. Also, let 𝜌₁ : Ω₁ → 𝐴, 𝜌₂ : Ω₂ → 𝐴, 𝜏₁ : Ω₁ → 𝐵 and ...