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This article is cited in 16 scientific papers (total in 16 papers)
On a periodic inner layer in the reaction–diffusion problem with a modular cubic source
N. N. Nefedov, E. I. Nikulin, A. O. Orlov Faculty of Physics, Lomonosov Moscow State University, Moscow, 119991 Russia
Abstract:
The article studies a singularly perturbed periodic problem for the parabolic reaction–diffusion equation in the case of a discontinuous source: a nonlinearity describing the reaction (interaction). The case of the existence of an inner transition layer under conditions of an unbalanced and a balanced reaction is considered. An asymptotic approximation is constructed, and the asymptotic Lyapunov stability of periodic solutions in each of the cases is investigated. To prove the existence of a solution and its asymptotic stability, the asymptotic method of differential inequalities is used. The theoretical result is illustrated by an example and numerical calculations.
Key words:
singularly perturbed parabolic problems, periodic problems, reaction–diffusion equations, two-dimensional contrast structures, balanced nonlinearity, inner layers, fronts, asymptotic methods, differential inequalities, asymptotic Lyapunov stability, discontinuous reaction.
Received: 11.11.2019 Revised: 10.01.2020 Accepted: 09.04.2020
Citation:
N. N. Nefedov, E. I. Nikulin, A. O. Orlov, “On a periodic inner layer in the reaction–diffusion problem with a modular cubic source”, Zh. Vychisl. Mat. Mat. Fiz., 60:9 (2020), 1513–1532; Comput. Math. Math. Phys., 60:9 (2020), 1461–1479
Linking options:
https://www.mathnet.ru/eng/zvmmf11130 https://www.mathnet.ru/eng/zvmmf/v60/i9/p1513
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