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JOURNALS // Uspekhi Matematicheskikh Nauk // Archive

Uspekhi Mat. Nauk, 2012 Volume 67, Issue 3(405), Pages 147–172 (Mi rm9483)

This article is cited in 15 papers

Difference potentials analogous to Cauchy integrals

V. S. Ryaben'kii

M. V. Keldysh Institute for Applied Mathematics, Russian Academy of Sciences

Abstract: This work presents the state of the art in the theory of potentials for the solutions of systems of linear difference equations, which was proposed by the author in 1969. The role played by difference potentials in the solution of linear difference schemes of general form is for the first time compared in detail to the role played by Cauchy-type integrals in the theory of analytic functions. New vistas are exposed, which are opened up by the theory of difference potentials and arise through combining the universality and algorithmicity of difference schemes with certain properties of Cauchy-type integrals. A brief bibliographical review covers some of the fundamental applications of the theory which have already been implemented.
Bibliography: 61 titles.

Keywords: difference potentials, Cauchy integrals, numerical solution of boundary value problems, artificial boundary conditions, mathematical theory of noise control.

UDC: 512.64+517.5+519.6+577.9

MSC: 31C20, 65N06

Received: 05.12.2011

DOI: 10.4213/rm9483


 English version:
Russian Mathematical Surveys, 2012, 67:3, 541–567

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© Steklov Math. Inst. of RAS, 2024