Zhytomyr State University LibraryAsymptotic expansion for transport processes in semi-Markov mediaА. А.PogoruіauthorRamón М.Rodríguez-DagnіnoauthorIn this paper we study asymptotic expansions for a solution of the singularly perturbed equation for a functional of a semi-Markov random evolution on the line. By using the method for solutions of singularly perturbed equations, we obtain the solution in the form of a series of regular and singular terms. The first regular term satisfies a diffusion-type equation, and the first singular term is a semigroup with the infinitesimal operator of the respective related bivariate process. Each regular and singular term can be calculated recursively.Mathematical Analysis2010Article

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