López Gómez, JuliánMuñoz Hernández, Eduardo2025-08-292025-08-292024-05Julián López-Gómez, Eduardo Muñoz-Hernández "A robust multiplicity result in a generalized diffusive predator-prey model," Advances in Differential Equations, Adv. Differential Equations 29(5/6), 437-476, (May 2024)10.57262/ade029-0506-437https://hdl.handle.net/20.500.14352/123526This paper analyzes the generalized spatially heterogeneous diffusive predator-prey model introduced by the authors in [24],whose interaction terms depend on a saturation coefficient $m(x)\gneq0$. As the amplitude of the saturation term, measured by $\|m\|_{\infty}$, blows up to infinity, the existence of, at least, two coexistence states, is established in the region of the parameters where the semitrivial positive solution is linearly stable, regardless the sizes and the shapes of the remaining function coefficients in the setting of the model. In some further special cases, an $S$-shaped component of coexistence states can be constructed, which causes the existence of, at least, three coexistence states, thoughthis multiplicity occurs within the parameter regions where the semitrivial positive solution is linearly unstable. Therefore, these multiplicity results inherit a rather different nature.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal articlehttps://dx.doi.org/10.57262/ade029-0506-437https://projecteuclid.org/journals/advances-in-differential-equations/volume-29/issue-5_2f_6/A-robust-multiplicity-result-in-a-generalized-diffusive-predator-prey/10.57262/ade029-0506-437.shortrestricted access517Diffusive predator-prey systemsMultiplicity of coexistence statesBifurcation theory and topological nonlinear analysisEcuaciones diferencialesTopología1202.20 Ecuaciones Diferenciales en derivadas Parciales