Álvarez Caudevilla, PabloBrandle Cerqueira, Cristina2024-01-082024-01-082023-10-01Álvarez-Caudevilla, Pablo, Brändle, Cristina. "A stationary population model with an interior interface-type boundary". Nonlinear Analysis: Real World Applications 73 (2023) 103918 (26p). https://doi.org/10.1016/j.nonrwa.2023.1039181468-12181878-5719 (online)https://hdl.handle.net/10016/39175We propose a stationary system that might be regarded as a migration model of some population abandoning their original place of abode and becoming part of another population, once they reach the interface boundary. To do so, we show a model where each population follows a logistic equation in their own environment while assuming spatial heterogeneities. Moreover, both populations are coupled through the common boundary, which acts as a permeable membrane on which their flow moves in and out. The main goal we face in this work will be to describe the precise interplay between the stationary solutions with respect to the parameters involved in the problem, in particular the growth rate of the populations and the coupling parameter involved on the boundary where the interchange of flux is taking place.26eng© 2023 The Author(s). Published by Elsevier Ltd.This is an open access article under the CC BY-NC-ND licenseAtribución-NoComercial-SinDerivadas 3.0 EspañaCoupled SystemsInterchange Of FluxInterfacesMigration ModelsSpatial Heterogeneitiesresearch articleMatemáticashttps://doi.org/10.1016/j.nonrwa.2023.103918open access126Nonlinear Analysis: Real World Applications73,103918AR/0000033856