Giuseppe Ancona, Università di Strasburgo Quadratic forms arising from geometry Giovedì 16 Giugno 2022, ore 16:30 Sala di Rappresentanza del Dip. di Matematica, via C. Saldini 50 |
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Andrea Malchiodi, Scuola Normale Superiore di Pisa Prescribing scalar curvature in conformal geometry Giovedì 19 Maggio 2022, ore 17:00 Sala Consiglio, 7 piano, Ed. La Nave, via Bonardi 9 |
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Stefan Kebekus, University of Freiburg The Minimal Model Program, and Extension Theorems for Differential Forms Lunedì 04 Aprile 2022, ore 16:00 Sala di Rappresentanza, Via C. Saldini 50, Milano |
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Marc Quincampoix, Université de Brest, France Control of multiagent systems viewed as dynamical systems on the Wasserstein space Mercoledì 23 Febbraio 2022, ore 17:00 Sala Consiglio 7 piano, Edificio La Nave e https://polimi-it.zoom.us/j/81969494860 |
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Carrillo José Antonio, University of Oxford Nonlocal Aggregation-Diffusion Equations: entropies, gradient flows, phase transitions and applications Giovedì 02 Dicembre 2021, ore 17:00 https://polimi-it.zoom.us/j/85300866421 |
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Kestutis Cesnavicius, Institut de Mathématique d'Orsay, Université Paris-Saclay The perfectoid approach to purity questions Lunedì 15 Novembre 2021, ore 16:00 Sala di Rappresentanza, Via C. Saldini 50, Milano e ON LINE |
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Abstract
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Purity in arithmetic algebraic geometry is the phenomenon of certain invariants of algebraic varieties being insensitive to removing closed subvarieties of sufficiently large codimension, the Hartogs' extension principle being the basic example. The most delicate case of such results is in mixed characteristic (0, p), in which a new approach based on perfectoid rings has recently been introduced. I will overview it and discuss the results that it has yielded so far. |
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