Homomorphism (A/Ψ/Θ) (A/Φ) := transport (λ X, Homomorphism X (A/Φ)) path_quotient_algebras_third_surjection (hom_first_isomorphism_surjection hom_third_surjection).
Require Import Import algebra_notations quotient_algebra_notations isomorphic_notations.