2019/03/12 by Susanna Terracini, Gianmaria Verzini, Alessandro Zilio · 1 citation
Medicine · Mathematics · #Mathematical and Theoretical Epidemiology and Ecology Models #Nonlinear Differential Equations Analysis #Advanced Differential Equations and Dynamical Systems
paper · doi:10.1002/cpa.21823
Abstract This paper describes the structure of the nodal set of segregation profiles arising in the singular limit of planar, stationary, reaction‐diffusion systems with strongly competitive interactions of Lotka‐Volterra type, when the matrix of the interspecific competition coefficients is asymmetric and the competition parameter tends to infinity. Unlike the symmetric case, when it is known that the nodal set consists of a locally finite collection of curves meeting with equal angles at a locally finite number of singular points, the asymmetric case shows the emergence of spiraling nodal curves, still meeting at locally isolated points with finite vanishing order. © 2019 Wiley Periodicals, Inc.