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math.CA2020★ 2 cited
Existence of periodic solution of Nicholson-type system with nonlinear density-dependent mortality
Gustavo Ossandón, Daniel Sepúlveda
This article studies an -periodic system of Nicholson-type differential equations with nonlinear density-dependent mortality rate. Using the degree theory we obtain sufficient c…
math.CA2016★ 4 cited
Approximation of Linear Differential Equations with variable delay on an Infinite Interval
Daniel Sepúlveda
We study approximation of non-autonomous linear differential equations with variable delay over infinite intervals. We use piecewise constant argument to obtain a corresponding dis…
math.CA2015
Dichotomies and asymptotic equivalence in alternately advanced and delayed differential systems
Aníbal Coronel, Christopher Maulén, Manuel Pinto +1
In this paper, ordinary and exponential dichotomies are defined in differential equations with equations with piecewise constant argument of general type. We prove the asymptotic e…