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JOURNALS // Matematicheskie Zametki // Archive

Mat. Zametki, 2020 Volume 108, Issue 1, Pages 47–63 (Mi mzm12484)

This article is cited in 3 papers

Andronov–Hopf Bifurcation in Logistic Delay Equations with Diffusion and Rapidly Oscillating Coefficients

S. A. Kashchenko, D. O. Loginov

P.G. Demidov Yaroslavl State University

Abstract: A logistic delay equation with diffusion, which is important in applications, is studied. It is assumed that all of its coefficients, as well as the coefficients in the boundary conditions, are rapidly oscillating functions of time. An averaged equation is constructed, and the relation between its solutions and the solutions of the original equation is studied. A result on the stability of the solutions is formulated, and the problem of local dynamics in the critical case is studied. An algorithm for constructing the asymptotics of the solutions and an algorithm for studying their stability are proposed. It is important to note that the corresponding algorithm contains both a regular and a boundary layer component. Meaningful examples are given.

Keywords: averaging, logistic equation, delay, boundary conditions, bifurcations, stability.

UDC: 517

Received: 18.06.2019
Revised: 10.01.2020

DOI: 10.4213/mzm12484


 English version:
Mathematical Notes, 2020, 108:1, 50–63

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© Steklov Math. Inst. of RAS, 2025