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JOURNALS // Vestnik Tomskogo Gosudarstvennogo Universiteta. Matematika i Mekhanika // Archive

Vestn. Tomsk. Gos. Univ. Mat. Mekh., 2023 Number 82, Pages 5–13 (Mi vtgu985)

MATHEMATICS

Localized eigenfunctions in the asymptotic model of the spectral problem

E. A. Molchanova

Khakas State University, Abakan, Russian Federation

Abstract: Localized eigenfunctions in the two-dimensional spectral problem containing a small parameter with higher derivatives are constructed on the expected solution form. Localization in this context means that the solution exponentially decays in both directions starting from the "weakest" point or line. The constructions are based on the algorithm introduced by V.P. Maslov. A modification of this algorithm for the thin shell theory problems is given as an application. The paper shows implementation of the algorithm to obtain formulas giving eigenvalues and corresponding eigenfunctions. An example of solving a specific problem is given, illustrating stages of the applied asymptotic model.

Keywords: spectral problem, asymptotic method, localization of eigenfunctions.

UDC: 519.6

MSC: 41А60

Received: 18.05.2022
Accepted: March 31, 2023

DOI: 10.17223/19988621/82/1



© Steklov Math. Inst. of RAS, 2026