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JOURNALS // Itogi Nauki i Tekhniki. Sovremennaya Matematika i ee Prilozheniya. Tematicheskie Obzory // Archive

Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 2021 Volume 192, Pages 55–64 (Mi into781)

Solution of the singularly perturbed Cauchy problem with a “weak” turning point of the limit operator

A. G. Eliseev, P. V. Kirichenko

National Research University "Moscow Power Engineering Institute"

Abstract: In this paper, we propose a method for constructing an asymptotic solution to a singularly perturbed Cauchy problem in the case of violation of the stability conditions for the spectrum of the limit operator. In particular, we consider a problem with a turning point where eigenvalues coincide at $t=0$.

Keywords: singularly perturbed problem, turning point, regularization method.

UDC: 517.928.2

MSC: 34E20

DOI: 10.36535/0233-6723-2021-192-55-64



© Steklov Math. Inst. of RAS, 2024