Measure solutions for some models in population dynamics

Details Measure solutions for some models in population dynamics Measure solutions for some models in population dynamics

2011-12-02

arxiv.org/abs/1112.0522v2

Mathematics

Analysis of PDEs

15 pages

Scientific paper

We give a direct proof of well-posedness of solutions to general selection-mutation and structured population models with measures as initial data. This is motivated by the fact that some stationary states of these models are measures and not $L^1$ functions, so the measures are a more natural space to study their dynamics. Our techniques are based on distances between measures appearing in optimal transport and common arguments involving Picard iterations. These tools provide a simplification of previous approaches and are applicable or adaptable to a wide variety of models in population dynamics.

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