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The exact analytical solution in quadratures have been found for the generating function of spin correlation functions for the Reiss variant of the kinetic Ising model that is the extension of the Glauber–Ising model to account for the dependence of heat bath temperature on time.

The diagram technique suggested earlier to find vertex functions for the description of homophase states in the framework of the Landau theory of phase transitions in polydisperse copolymers is extended to the description of heterophase states.