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JOURNALS // Sibirskie Èlektronnye Matematicheskie Izvestiya [Siberian Electronic Mathematical Reports] // Archive

Sib. Èlektron. Mat. Izv., 2018 Volume 15, Pages 1697–1718 (Mi semr1032)

This article is cited in 7 papers

Differentical equations, dynamical systems and optimal control

On estimates of solutions in a predator-prey model with two delays

M. A. Skvortsovaab

a Sobolev Institute of Mathematics, pr. Koptyuga, 4, 630090, Novosibirsk, Russia
b Novosibirsk State University, Pirogova st., 2, 630090, Novosibirsk, Russia

Abstract: We consider a system of differential equations with two delays, which describes the interaction between predator and prey populations. The model takes into account the age structure of populations, herewith the delay parameters denote the time that predator and prey individuals need to become adult. We consider questions of stability of equilibrium points and study asymptotic properties of solutions. We establish estimates of solutions characterizing the stabilization rate at infinity and find estimates of attraction sets. The results are obtained using modified Lyapunov–Krasovskii functionals.

Keywords: predator-prey model, delay differential equations, asymptotic stability, estimates of solutions, attraction set, modified Lyapunov–Krasovskii functionals.

UDC: 517.929.4

MSC: 34K20, 34K60, 92D25

Received October 8, 2018, published December 19, 2018

DOI: 10.33048/semi.2018.15.141



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