Anno 2024
| Seminario Matematico e Fisico di Milano |
| François Delarue Université Côte d'Azur Mean field control and games. Some prospects
Giovedì 18 Aprile 2024, ore 14:00 aula U5 RATIO-3014 Dip di Matematica e Applicazioni - Università Milano - Bicocca |
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| Seminario Matematico e Fisico di Milano |
| Corinna Ulcigrai Institut für Mathematik - Universität Zürich Periodic surfaces and deterministic random walks: dynamics between geometry and probability
Giovedì 21 Marzo 2024, ore 14:30 aula U5 RATIO-3014 Università Milano - Bicocca |
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| Seminario Matematico e Fisico di Milano |
| Marc Levine Universität Duisburg-Essen DT invariants of smooth projective threefolds: classical, quadratic and real
Mercoledì 21 Febbraio 2024, ore 17:00 Sala di Rappresentanza del Dipartimento di Matematica di via Saldini |
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Abstract
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Let X be a smooth projective 3-fold over the complex
numbers. Following work of Thomas, Behrend-Fantechi, and others, one
has a virtual fundamental class in the Chow group of 0-cycles on the
Hilbert scheme of dimension 0, length n subschemes of X, the degree of
which is the nth Donaldson-Thomas invariant of X
Now take X over an arbitrary field k. We have developed a construction
of virtual fundamental classes with values in an arbitrary motivic
cohomology theory. An example of such, a ``quadratic'' analog of the
Chow groups, is the cohomology of the sheaf of Witt rings, which leads
to a refinement of the classical DT-invariants to quadratic
DT-invariants with values in the Witt ring of quadratic forms over k.
We will discuss some developments and conjectures for these refined DT
invariants, including some computations of the signature of these
invariants due to Anneloes Viergever. |
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| Seminario Matematico e Fisico di Milano |
| Jiri Neustupa Czech Academy of Sciences, Institute of Mathematics, Prague On steady solutions to the MHD equations with inhomogeneous generalized impermeability boundary conditions for the magnetic field
Lunedì 19 Febbraio 2024, ore 11:30 Sala di Rappresentanza del Dipartimento di Matematica di via Saldini | |
| Seminario Matematico e Fisico di Milano |
| Alexander Kuznetsov Steklov Institute, Mosca Categorical resolutions and categorical absorptions of singularities
Giovedì 18 Gennaio 2024, ore 16:30 Aula 8, Dipartimento di Matematica, via Saldini |
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