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On the Hilbert problem for semi-linear Beltrami equations

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Abstract

The presented paper is devoted to the study of the well-known Hilbert boundary-value problem for semi-linear Beltrami equations with arbitrary boundary data that are measurable with respect to logarithmic capacity. Namely, we prove here the corresponding results on the existence, regularity, and representation of its nonclassical solutions with a geometric interpretation of boundary values as the angular (along the nontangential paths) limits in comparison with the classical approach in PDE. For this purpose, we apply completely continuous operators by Ahlfors–Bers, first of all to obtain solutions of semi-linear Beltrami equations, generally speaking with no boundary conditions, and then to derive their representation through the solutions of the Vekua-type equations and the so-called generalized analytic functions with sources. Besides, we obtain similar results for nonclassical solutions of the Poincaré boundary-value problem on directional derivatives and, in particular, of the Neumann problem with arbitrary measurable data to semi-linear equations of the Poisson type. The obtained results are applied to some problems of mathematical physics describing such phenomena as diffusion with physical and chemical absorption, plasma states, and stationary burning in anisotropic and inhomogeneous media.

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Authors and Affiliations

  1. Institute of Applied Mathematics and Mechanics of the NAS of Ukraine, Slov’yansk, Ukraine

    Vladimir Gutlyanskiĭ, Vladimir Ryazanov & Olga Nesmelova

  2. Bogdan Khmelnytsky National University of Cherkasy, Cherkasy, Ukraine

    Vladimir Ryazanov

  3. Holon Institute of Technology, Holon, Israel

    Eduard Yakubov

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  1. Vladimir Gutlyanskiĭ
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  2. Vladimir Ryazanov
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  3. Olga Nesmelova
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  4. Eduard Yakubov
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Correspondence to Vladimir Gutlyanskiĭ.

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Translated from Ukrains’kiĭ Matematychnyĭ Visnyk, Vol. 19, No. 4, pp. 489–516, October–December, 2022.

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Gutlyanskiĭ, V., Ryazanov, V., Nesmelova, O. et al. On the Hilbert problem for semi-linear Beltrami equations. J Math Sci 270, 428–448 (2023). https://doi.org/10.1007/s10958-023-06356-7

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