DIRICHLET-NEUMANN SPECTRAL PROBLEMS FOR
THREE-DIMENSIONAL ELLIPTIC EQUATIONS
WITH SINGULAR COEFFICIENTS
Kamoliddin Karimov1, Asror Shokirov2
1Ferghana State University
Department of Differential Equations
150100, Fergana, UZBEKISTAN
2Fergana branch Tashkent University of IT
Department of Exact Sciences
150100, Fergana, UZBEKISTAN

Abstract

In this paper, in domains consisting of parts of a sphere, the Dirichlet-Neumann spectral problems are formulated for elliptic type equations with two and three singular coefficients. The region of values of the parameter where there are no eigenvalues of the problem and a countable number of eigenvalues of the problem are found and eigenfunctions corresponding to the found eigenvalues are constructed.

Citation details of the article



Journal: International Journal of Applied Mathematics
Journal ISSN (Print): ISSN 1311-1728
Journal ISSN (Electronic): ISSN 1314-8060
Volume: 35
Issue: 4
Year: 2022

DOI: 10.12732/ijam.v35i4.11

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