February 2022 - Geometria_Pisa - Mailing list — Dipartimento di Matematica, UniPI

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 di Combinatoria, Teoria di Lie e Topologia - 2 Marzo 2022 - Nicoletta Cantarini
by Francesco Sala 28 Feb '22

28 Feb '22

Carə tuttə, Vi scrivo per annunciarvi che il 2 Marzo venturo vi sarà un seminario per il ciclo di seminari "Seminario di Combinatoria, Teoria di Lie e Topologia” di Pisa. Il seminario si svolgerà in Aula Riunioni dalle 15 alle 16. L'oratrice è Nicoletta Cantarini (Università di Bologna). — Titolo: Verma modules for the Lie superalgebra E(5,10) Abstract: in this talk we will describe the construction of the so-called finite Verma modules for Z-graded Lie superalgebras and study the finite Verma modules over the exceptional linearly compact Lie superalgebra E(5,10). This is done through the classification of singular vectors. We will show that the corresponding morphisms of Verma modules can be arranged in an infinite number of bilateral infinite complexes which can be viewed as "exceptional" de Rham complexes for E(5,10). — Vi prego di inoltrare questo messaggio a tutti coloro che ritenete possano essere interessati. Sperando di vedervi numerosi, vi mando i miei saluti, A presto, Francesco

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annuncio scuola estiva
by Paolo Lisca 25 Feb '22

25 Feb '22

Inoltro annuncio di scuola estiva a Bologna. PL https://matematica.unibo.it/it/didattica/summer-e-winter-school [https://matematica.unibo.it/@@site-logo/logo-unibo.png]<https://matematica.unibo.it/it/didattica/summer-e-winter-school> Summer e winter school — Matematica<https://matematica.unibo.it/it/didattica/summer-e-winter-school> matematica.unibo.it

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seminario
by Paolo Lisca 23 Feb '22

23 Feb '22

Buongiorno, inoltro avviso di seminario. Paolo Lisca --------------- Data e ora: giovedì 18 gennaio ore 15 Speaker: Carlo Collari (Università di Pisa) Titolo: Omologia Multipath e poset dei multi-cammini. Title: Multipath homology and the path poset. Abstract: The aim of this talk is to present some homology theories for graphs (and, in particular, multipath homology), describe their mutual relationship, and see how these theories are connected with other homology theories (i.e. homology theories for knots and algebras). We start by describing some classical theories for graphs. Then, we will focus on the construction, due to Helme-Guizon and Rong, of chromatic homology. This theory categorifies the chromatic polynomial of graphs, and its construction is based on Khovanov homology. In particular, we will present a result due to J. Przytycki, which relates Khovanov homology, chromatic homology, and Hochschild homology. Afterwards, we will describe Turner and Wagner's approach to the "extension" of chromatic homology to oriented graphs while preserving an analogue of Przytycki's result. Finally, we will define multipath homology and compare it with Turner-Wagner homology. In the last part of the talk, time permitting, we will give a topological description of the path poset, which is a key ingredient in the definition of Turner-Wagner and multipath homologies. This talk is based on joint work with L. Caputi (University of Aberdeen) and S. Di Trani (Sapienza Università di Roma). -------------------- Il seminario avrà luogo nella sala virtuale: https://teams.microsoft.com/l/meetup-join/19%3ameeting_MTgxNjUyYTEtNTljOC00… [https://statics.teams.cdn.office.net/hashedassets-launcher/favicon/favicon-…]<https://teams.microsoft.com/l/meetup-join/19%3ameeting_MTgxNjUyYTEtNTljOC00…> Join conversation<https://teams.microsoft.com/l/meetup-join/19%3ameeting_MTgxNjUyYTEtNTljOC00…> teams.microsoft.com

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Overleaf
by Francesco Sala 09 Feb '22

09 Feb '22

Car* tutt*, Prima di spammare tutti gli afferenti al dipartimento, scrivo a voi. Avrei intenzione di comprare una licenza “collaborator” di Overleaf della durata di un anno utilizzando i miei fondi di ateneo. Per motivi burocratici, per fare ciò ho bisogno di trovare almeno altre 4 persone interessate. Il costo della licenza per persona è di Euro 116.8 + IVA 22%- l’acquisto di gruppo ha uno sconto rispetto all’acquisto della licenza per un singolo (https://www.overleaf.com/user/subscription/plans) Fatemi sapere se siete interessati. Ciao, Francesco

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I: postdoc opening in geometry
by Paolo Lisca 08 Feb '22

08 Feb '22

Inoltro annuncio di assegno di ricerca alla SISSA. Paolo Lisca ________________________________ Da: Gleb Smirnov <gleb.smirnov(a)unige.ch> Inviato: martedì 8 febbraio 2022 16:52 Oggetto: postdoc opening in geometry Dear Colleagues: FYI, SISSA (International School for Advanced Studies), located in Trieste, is advertising a post-doctoral position in geometry and topology; this is a two-year position that can be extended for one more year. Candidates with expertise in the areas of low-dimensional topology, 4-manifolds, knotted surfaces, generalized complex geometry, symplectic geometry, and metrics with lower curvature bounds are particularly encouraged to apply. You find the official announcement at the following link: https://www.sissa.it/system/files/bandi/Announcement_ar_fs-mate-3-2022.pdf https://www.sissa.it/bandi/selezione-pubblica-titoli-colloquio-conferimento… Selezione pubblica per titoli e colloquio per il conferimento di n. 1 assegno di ricerca - Area Matematica (ref. prof. Torres) | Scuola Internazionale Superiore di Studi Avanzati<https://www.sissa.it/bandi/selezione-pubblica-titoli-colloquio-conferimento…> www.sissa.it La domanda di partecipazione alla selezione , nonché i titoli posseduti, i documenti e le pubblicazioni ritenute utili per la selezione, devono essere presentati, a pena di esclusione, per via telematica, utilizzando l’applicazione informatica dedicata alla pagina / Under penality of exclusion applications for participation in the competition, along with the relevant You can apply at the following link: https://pica.cineca.it/sissa/ar-fs-mate-3-2022/ The deadline to submit applications is 9/3/2022 at 1 pm CET. For technical queries concerning the application process, please contact: assegniricerca(AT)sissa.it<http://sissa.it/> Kind regards, Gleb

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Seminario Leone Slavich
by Bruno Martelli 03 Feb '22

03 Feb '22

Buondì, Annuncio un seminario di Leone Slavich che si terrà a Pavia, ma seguibile anche on line su Zoom (link in fondo alla mail) Bruno ---- Speaker: Leone Slavich Orario: mercoledì 9 febbraio alle 14:30 Titolo: Totally geodesic immersions of hyperbolic manifolds Abstract: The study of totally geodesic immersions between (complete, finite-volume) hyperbolic manifolds is a classical problem in the field of hyperbolic geometry. There are two main approaches to this problem which often interplay with each other: 1) Given a hyperbolic manifold N, determine the hyperbolic manifolds in which N can be immersed geodesically; 2) Given a hyperbolic manifold, determine its totally geodesic immersed submanifolds. We will show how it is possible to build totally geodesic immersed submanifolds in a hyperbolic manifold M using finite subgroups in the commensurator of M. We will call the subspaces arising from this construction "finite centralise subspaces" (or fc-subspaces) and use them to provide an arithmeticity criterion in terms of their finiteness/non-finiteness. In the case of arithmetic hyperbolic manifolds we will show how to characterise all totally geodesic immersions through the analysis of certain algebraic invariants: the adjoint trace field (which is an algebraic number field) and the ambient group (an algebraic group defined over the adjoint trace field). Sara' possibile seguire anche il seminario online al seguente link zoom: Join Zoom Meeting https://us02web.zoom.us/j/83228812062 Meeting ID: 832 2881 2062 ...

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