Stability of optimal paths in branched transport
speaker: Maria Colombo (EPFL Lausanne)abstract: Models involving branched structures are employed to describe several supply-demand systems such as the structure of the nerves of a leaf, the system of roots of a tree and the nervous or cardiovascular systems. Given a flow (traffic path) that transports a given source onto a given target measure along a 1-dimensional network, the transportation cost per unit length is supposed in these models to be proportional to a concave power $\alpha \in (0,1)$ of the intensity of the flow.
The talk introduces the model and focuses on the stability for optimal traffic paths, with respect to variations of the source and target measures. The stability of optimal traffic paths was known when $\alpha$ is bigger than a critical threshold, but can be generalized to other exponents (for instance, to any $\alpha \in (0,1)$ in dimension 2) for a fairly large class of measures.
(joint work with Antonio De Rosa and Andrea Marchese)
timetable:
Mon 26 Jun, 17:20 - 18:10, Aula Dini
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