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Vestnik Udmurtskogo Universiteta. Matematika. Mekhanika. Komp'yuternye Nauki, 2020, Volume 30, Issue 2, Pages 270–289
DOI: https://doi.org/10.35634/vm200210
(Mi vuu725)
 

MATHEMATICS

Unique solvability of a nonlocal problem with shift for a parabolic-hyperbolic equation

A. K. Urinov, Mamanazarov A.O.

Fergana State University, ul. Murabbiylar, 19, Fergana, 150100, Uzbekistan
References:
Abstract: In the paper, a parabolic-hyperbolic equation with a singular coefficient and a spectral parameter in the domain which consists of a characteristic triangle and a half strip has been considered. A nonlocal problem connecting the values of the desired function at the two points of boundary characteristics and the line of equation type changing by means of two operators, the first of which depends on the coefficient of the singularity and the second one — on the spectral parameters, is formulated. The considered problem is investigated by reducing it to the system of equations in the trace of the desired function and its derivative with respect to $x$ on the line of equation type changing. The uniqueness of the solution is proved by the method of energy integrals, for this we use integral representations of Euler gamma-function and Bessel function of the first kind. The existence of the solution is proved by the method of integral equations, for this we equivalently reduce the considered problem to the Fredholm integral equation of the second kind which solvability follows from the uniqueness of the problem solution. Sufficient conditions for unique solvability of the considered problem are found.
Keywords: parabolic-hyperbolic equation, singular coefficient, spectral parameter, noncharacteristic line of type changing, nonlocal problem, unique solvability.
Received: 04.02.2020
Bibliographic databases:
Document Type: Article
UDC: 517.956.6
MSC: 35M10, 35M12
Language: Russian
Citation: A. K. Urinov, Mamanazarov A.O., “Unique solvability of a nonlocal problem with shift for a parabolic-hyperbolic equation”, Vestn. Udmurtsk. Univ. Mat. Mekh. Komp. Nauki, 30:2 (2020), 270–289
Citation in format AMSBIB
\Bibitem{UriMam20}
\by A.~K.~Urinov, Mamanazarov~A.O.
\paper Unique solvability of a nonlocal problem with shift for a parabolic-hyperbolic equation
\jour Vestn. Udmurtsk. Univ. Mat. Mekh. Komp. Nauki
\yr 2020
\vol 30
\issue 2
\pages 270--289
\mathnet{http://mi.mathnet.ru/vuu725}
\crossref{https://doi.org/10.35634/vm200210}
\elib{https://elibrary.ru/item.asp?id=43939876}
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    Вестник Удмуртского университета. Математика. Механика. Компьютерные науки
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