Geometria_Pisa April 2022

geometria_pisa@lists.dm.unipi.it

5 participants
10 discussions

Seminario 27/10/2021
by Tamas Szamuely 25 Nov '22

25 Nov '22

Cari tutti, ecco il programma del prossimo seminario di geometria algebrica e aritmetica di Pisa: Mercoledì 27 ottobre 2021, Dipartimento di matematica, Aula Magna 15:00--16:00 Valerio Melani (Pisa): The Poisson structure on the affine Grassmannian via derived algebraic geometry Motivated by a conjecture of Kapranov-Ginzburg-Vasserot, we will explain how to reinterpret the classical Poisson structure on the affine Grassmannian using tools from derived symplectic (and Poisson) geometry. Our approach is based on the study of symplectic structures on derived stacks whose cotangent complex is not perfect, and therefore uses in a crucial way the formalism of Tate modules. The talk is based on joint work with Mauro Porta and Pavel Safronov. Homepage del seminario: http://pagine.dm.unipi.it/tamas/saga.html Migliori saluti, Tamás Szamuely

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Seminario mercoledì prossimo
by Bruno Martelli 29 Apr '22

29 Apr '22

Buondì, Segnalo un seminario di geometria per mercoledì prossimo. A presto, Bruno 04-May-2022 - 16:00 Sala Seminari (Dip. Matematica) Simplicial volume and aspherical manifolds Marco Moraschini Simplicial volume is a homotopy invariant for compact manifolds introduced by Gromov in the early 80s. It measures the complexity of a manifold in terms of singular simplices. Since simplicial volume behaves similarly to the Euler characteristic, a natural problem is to understand the relation between these two invariants. More precisely, a celebrated question by Gromov (~’90) asks whether all oriented closed connected aspherical manifolds with zero simplicial volume also have vanishing Euler characteristic. In this talk, we will describe the problem and we will show counterexamples to some variations of the previous question. Moreover, we will describe some new strategies to approach the problem as well as the relation between Gromov’s question and other classical problems in topology. This is part of a joint work with Clara Löh and George Raptis.

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Fwd: Postdoc position at Università di Firenze
by Bruno Martelli 27 Apr '22

27 Apr '22

---------- Forwarded message --------- From: Daniele Angella <daniele.angella(a)unifi.it> Date: Wed, Apr 27, 2022 at 5:47 PM Subject: Postdoc position at Università di Firenze To: geometriaglobale(a)lists.math.unifi.it < geometriaglobale(a)lists.math.unifi.it>, geometriaglobale-group(a)unifi.it < geometriaglobale-group(a)unifi.it> Cc: Fabio Podesta' <fabio.podesta(a)unifi.it> Dear all, We are looking for candidates for a Postdoc position at Università di Firenze, Italy, starting from July. The position is partially supported by the Project "Real and Complex Manifolds: Topology, Geometry and Holomorphic Dynamics". The call is open until the deadline May 29th, 2022: https://titulus.unifi.it/albo/viewer?view=files%2F004521290-UNFICLE-55ffded… The call is in Italian - feel free to contact us in case you need help on translation or if you want more information. Please forward the announcement to potential candidates! All the best,

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workshop on Recent advances in bounded cohomology
by Marco Moraschini 26 Apr '22

26 Apr '22

Dear all, We are pleased to announce a workshop on *Recent Advances in Bounded Cohomology* to be held at the University of Regensburg during *September 26-30, 2022*, funded by the SFB Higher Invariants of the University of Regensburg. The aim of this workshop is to bring together researchers in bounded cohomology theory and related fields and discuss recent developments. In addition to the invited talks, there will be opportunities for researchers to give contributed talks and ample time for discussions and collaboration. The workshop will be held in a hybrid format. Our speakers are: - Jonathan Bowden (University of Regensburg) - Michelle Bucher (University of Geneva) - Caterina Campagnolo (UAM Madrid) - Francesco Fournier-Facio (ETH Zürich) - Roberto Frigerio (University of Pisa) - Jean-François Lafont (Ohio State University) - Michał Marcinkowski (University of Wrocław) - Nicolas Monod (EPFL) - Sam Nariman (Purdue University) - Chricton Ogle (Ohio State University) - Roman Sauer (KIT) More information and the registration form are available on the conference website: https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/ind… If you have any questions, please do not hesitate to contact the organizers. We look forward to seeing you in September! Best regards, the organizers, Clara Löh, Marco Moraschini and George Raptis

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[Indico] Marco D'Addezio, Parabolicity conjecture of F-isocrystals, 27/04/2022, 14:30 Europe/Rome
by francesco.sala＠unipi.it 26 Apr '22

26 Apr '22

Title: Parabolicity conjecture of F-isocrystals, Speaker(s): Marco D'Addezio, Université de Paris, Date and time: 27 Apr 2022, 14:30 (Europe/Rome), Lecture series: Algebraic and Arithmetic Geometry Seminar, Venue: Dipartimento di Matematica (Aula Magna). You can access the full event here: https://events.dm.unipi.it/e/70 Abstract -------- In the last years the theory of crystalline cohomology and F-isocrystals had a great development. I will present a new result concerning the algebraic monodromy groups of F-isocrystals. I will start with a quick introduction on crystalline cohomology, F-isocrystals, and overconvergent F-isocrystals. Subsequently, I will recall the definition of monodromy groups of F-isocrystals (which uses the theory of Tannakian categories) and in the end I will explain the main theorem, the applications, and some ideas of the proof. -- Indico :: Email Notifier https://events.dm.unipi.it/e/70

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Annuncio Seminario Caputi
by Carlo Collari 12 Apr '22

12 Apr '22

Buongiorno a tutti, inoltro l'annuncio del seminario di Luigi Caputi che si terrà domani (13 Aprile 2022) alle 16:00 nell'Aula Magna del Dipartimento. In allegato titolo e abstract Saluti, Carlo Collari Titolo: Coarse Homology Theories Relatore: Luigi Caputi (University of Aberdeen) Abstract: Coarse spaces, first introduced by J. Roe for studying index-type theorems, have recently found applications also in K-theory and assembly map conjectures. The main tool in such applications is given by coarse homology theories, homological invariants of coarse spaces. Goal of the talk is to define coarse homology theories using the homotopical approach developed by U. Bunke and A. Engel. The main example will be coarse algebraic K-theory.

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[Indico] Logarithmic Comparison Theorems for Hyperplane Arrangements, Twisted or Otherwise, Dan Bath, 08/04/2022, 15:00 Europe/Rome
by francesco.sala＠unipi.it 07 Apr '22

07 Apr '22

Title: Logarithmic Comparison Theorems for Hyperplane Arrangements, Twisted or Otherwise, Speaker(s): Dan Bath, KU Leuven, Date and time: 8 Apr 2022, 15:00 (Europe/Rome), Lecture series: Seminar on Combinatorics, Lie Theory, and Topology, Venue: Department of Mathematics (Aula Riunioni). You can access the full event here: https://events.dm.unipi.it/e/88 -- Indico :: Email Notifier https://events.dm.unipi.it/e/88

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[Indico] Logarithmic Comparison Theorems for Hyperplane Arrangements, Twisted or Otherwise, Dan Bath, 08/04/2022, 15:00 Europe/Rome
by francesco.sala＠unipi.it 06 Apr '22

06 Apr '22

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Fwd: [gdrtresses] Conference "Three day summer school on The Geometry and Dynamics of Moduli Spaces"
by Bruno Martelli 05 Apr '22

05 Apr '22

---------- Forwarded message --------- From: wagner(a)imj-prg.fr <wagner(a)imj-prg.fr> Date: Tue, Apr 5, 2022 at 11:35 AM Subject: [gdrtresses] Conference "Three day summer school on The Geometry and Dynamics of Moduli Spaces" To: gdrtresses(a)listes.math.cnrs.fr <gdrtresses(a)listes.math.cnrs.fr> Conference "Three day summer school on The Geometry and Dynamics of Moduli Spaces" We are announcing a short school in Geometry ad Dynamics of Moduli Spaces, to be held in June in Bologna. Here the web page: https://site.unibo.it/geometry-dynamics-summer-school-2022/en Registration is free but mandatory, here https://site.unibo.it/geometry-dynamics-summer-school-2022/en/registration

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[Indico] Lecture: Variation of stable birational type and bounds for complete intersections (06/04/2022, 14:30 Europe/Rome)
by francesco.sala＠unipi.it 05 Apr '22

05 Apr '22

Title: Variation of stable birational type and bounds for complete intersections, Speaker(s): Johannes Nicaise, KU Leuven and Imperial College London, Date and time: 6 Apr 2022, 14:30 (Europe/Rome), Lecture series: Algebraic and Arithmetic Geometry Seminar, Venue: Dipartimento di Matematica (Aula Magna). You can access the full event here: https://events.dm.unipi.it/e/69 Abstract -------- This talk is based on joint work with John Christian Ottem. I will explain a generalization of results by Shinder on variation of stable birational types in degenerating families, and how this can be used to extend Schreieder's non-stable rationality bounds from hypersurfaces to complete intersections in characteristic zero. This technique yields new results already for complete intersections of quadrics. -- Indico :: Email Notifier https://events.dm.unipi.it/e/69

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Geometria_Pisa April 2022