Morphisms of A_∞-algebras and modules

A_∞-algebra is a chain complex equipped with a coherent multiplicative structure, i.e. a multiplication which is commutative up to (higher) chain homotopy. Similarly A_∞-module over such algebra is equipped with its coherent action. These notions are used to represent cohomological information contained in topological multiplicative structures. One of the key tools of the theory are minimal models, which are useful in cohomological computations. In this thesis author presents certain sufficient conditions for a morphism of A_∞-modules to induce a morphism of their minimal models.