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Sarah Zerbes, University College London
The mysteries of L-values
Tuesday, December 10 2019, at 14:00
Sala di Rappresentanza, Dipartimento di Matematica, Via C. Saldini 50 | |
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Piermarco Cannarsa, Università di Roma Tor Vergata
Propagation of singularities for solutions to Hamilton-Jacobi equations
Monday, December 02 2019, at 15:30
Sala Consiglio del 7 piano, Dipartimento di Matematica, Via Ponzio 31-33, Milano |
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Abstract
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The study of the structural properties of the set of points at which the viscosity solution of a first order Hamilton-Jacobi equation fails to be differentiable - in short, the singular set - started with the paper [On the singularities of viscosity solutions to Hamilton-Jacobi-Bellman equations, Indiana Univ. Math. J. 36 (1987), pp.501-524] by Mete Soner and myself. These thirty years have registered enormous progress in the comprehension of the way how singularities propagate: a fine measure theoretical analysis of the singular set has been developed, it has been understood how singular dynamics is driven by generalised characteristics, and deep topological applications to the structure of the cut locus on a Riemannian manifold have been pointed out. In this talk, I will revisit the milestones of the theory and discuss possible developments and open problems.
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George Willis, University of Newcastle, Australia
Zero-dimensional symmetry, or locally profinite groups
Thursday, November 21 2019, at 16:00
Aula U5-3014 (Edificio 5, terzo piano) del Dipartimento di Matematica e Applicazioni dell'Università di Milano-Bicocca, in Via Cozzi 55 | |
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John Barrow, University of Cambridge
One Hunderd Years of Universes
Tuesday, October 29 2019, at 11:30
Palazzo di Brera, Via Brera 28, Milano, Sala Maria Teresa | |
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