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Only 3-points survive!

Data e ora inizio evento
Aula
Sala di Consiglio
Sede
Dipartimento di Matematica Guido Castelnuovo, Università Sapienza Roma
Speaker
Eugenio Montefusco
Affiliazione
Università Sapienza di Roma

Abstract: We study some qualitative properties of the solutions to a segregation limit problem in planar domains. The main goal is to show that, generically, the limit configuration of N competing populations consists of a partition of the domain whose singular points are (N-2) triple points, meaning that at most three populations meet at any point on the free boundary. To achieve this, we relate the solutions of the problem to a particular class of harmonic maps in singular spaces, which can be seen as the real part of certain holomorphic functions. The genericity result is obtained by tricky perturbation arguments.

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