Year 2026
 | Seminario Matematico e Fisico di Milano |
| Marcel Guardia
Universitat de Barcelona
Unstable motions in Celestial Mechanics
Wednesday, March 04 2026, at 14:30
aula C03 - Via Mangiagalli 25 - Università degli Studi di Milano | |
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| Seminario Matematico e Fisico di Milano |
| Luigi Ambrosio
SNS Pisa
Well posedness of ODE's for nonsmooth velocities and in non Euclidean ambient spaces: a survey
Wednesday, January 28 2026, at 14:00
aula U6-30, Dipartimento di Matematica e Applicazioni - Università Milano - Bicocca |
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Abstract
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In this lecture I will make a survey of the theory of regular lagrangian flows, that allows to prove existence, uniqueness and stability for ODE's associated to vector fields with little regularity, beyond the classical Cauchy-Lipschitz theory. Initiated in a work by Di Perna and Lions who dealt with Sobolev vector fields, the RLF axiomatization provides natural links with Probability.
More recent developments, including the regularity of the flow map, counterexamples and the case when even the ambient space is not smooth, will be discussed. |
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