A general theory of superconductivity is formulated within the thermodynamic Green function method for various types of pairing mediated by phonons. spin fluctuations. and strong Coulomb correlations in the Hubbard and t-J models. A rigorous Dyson equation for matrix Green functions is derived in terms of a self-energy as a many-particle Green function. https://lecoureures.shop/product-category/ski-de-fond-femme-vetements-manteau/