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
Buongiorno,
inoltro avviso di seminario.
Paolo Lisca
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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).
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Il seminario avrà luogo nella sala virtuale:
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Inoltro annuncio di convegno.
Paolo Lisca
________________________________
Da: Paul Seidel <pseidel(a)mit.edu>
Inviato: mercoledì 5 gennaio 2022 22:36
Oggetto: PLEASE DISTRIBUTE: Research conference "Frontiers in Geometry and Topology", ICTP, Trieste (Italy), August 8-12, 2022; APPLICATIONS OPEN NOW, DEADLINE FEBRUARY 28, 2022
We are delighted to announce this conference, to be held at ICTP, Trieste (Italy), August 8-12, 2022. The conference will cover several areas of current research, including low-dimensional topology, gauge theory, and Floer homology in all its flavors. It is partly intended to celebrate the mathematical contributions of Tomasz Mrowka. The conference will be preceded by a summer school for graduate students (the week before).
Speakers: (* = to be confirmed) David Gabai, Lothar Goettsche, Larry Guth, Jen Hom, Cole Hugelmeyer, *Peter Kronheimer, Francesco Lin, Robert Lipshitz, Paolo Lisca, Ciprian Manolescu, Gordana Matic, Rafe Mazzeo, Maggie Miller, Emmy Murphy, *John Pardon, Lisa Piccirillo, Juanita Pinzon Caicedo, Jake Rasmussen, *Daniel Ruberman, Andras Stipsicz, Zoltan Szabo, *Cliff Taubes, Donghao Wang, Claudius Zibrowius.
Applications are open now, and the deadline is FEBRUARY 28, 2022. You can find the application page linked to from the main event web page
http://indico.ictp.it/event/9706/
A bit of practical information (some of which is still preliminary):
WHO CAN APPLY? The application process is open, but due to space limitations at ICTP, we may have to be selective. Prospective participants will be informed of the outcome of the application as soon as possible.
HOW ABOUT COVID AND REMOTE PARTICIPATION? We encourage in-person participation, but in view of current uncertainties, the conference is designed as hybrid, and allows remote participation if necessary. Note that remote participants have to go through the same application process as in-person ones.
WHERE WILL PARTICIPANTS STAY? ICTP has on-campus housingthat participants can book at a reasonable price. Alternatively, ICTP will be able to assist with finding a hotel in the town of Trieste.
HOW ABOUT REIMBURSEMENT FOR HOUSING AND TRAVEL? Unfortunately, for most conference participants, we will NOT beable to provide any kind of reimbursement. One exception are participants from developing countries, for whom ICTP will contribute a limited amount of resources (this is part of ICTP's mission of encouraging the worldwide development of mathematics and physics). The other exception are graduate students staying on from the summer school, where we have a small amount of funding for travel expenses from the Clay Mathematics Institute. We have a pending application for funding from the National Science Foundation, which if approved would provide additional resources for a small number of US-based graduate students and postdocs.)
Organizing committee:
Paul Feehan, Lenny Ng, Peter Ozsvath, Yongbin Ruan, Paul Seidel
Inoltro annuncio di scuola estiva
Paolo Lisca
________________________________
Da: Paul Seidel <pseidel(a)mit.edu>
Inviato: mercoledì 5 gennaio 2022 22:31
Oggetto: PLEASE DISTRIBUTE: Graduate summer school "Frontiers in Geometry and Topology", ICTP, Trieste (Italy), August 1-5, 2022; APPLICATIONS OPEN NOW, DEADLINE FEBRUARY 28, 2022
We are delighted to announce this summer school, to be held at ICTP, Trieste (Italy), August 1-5, 2022. It will feature mini-courses by Joshua Greene, Jen Hom, Francesco Lin, John Pardon (to be confirmed) and Thomas Walpuski, covering topics in low-dimensional topology, Floer homology, and gauge theory. The summer school will be followed by a research conference the week after. Applications are open now, and the DEADLINE for applying is
FEBRUARY 28, 2022.
The application page is linked to from the main event web page,
http://indico.ictp.it/event/9705/
Frontiers in Geometry and Topology Summer School | (smr 3648) (01-5 August 2022)<http://indico.ictp.it/event/9705/>
indico.ictp.it
An ICTP Hybrid Meeting Organised in partnership with the Clay Mathematics Institute The conference is intended as an appreciation of the contributions of Tomasz Mrowka Geometry and Topology have seen spectacular recent developments, including the solution of classical problems. As a consequence, the established picture of how various parts of these areas fit together
Applicants are expected to provide a recommendation letter from their PhD advisor.
Practical information (some of which is still preliminary at this point):
WHO CAN APPLY? PhD students with an interest in the topics covered by the summer school. During the application process, applicants will be able to state whether they are potentially interested in staying on for the conference the week after.
HOW ABOUT COVID AND REMOTE PARTICIPATION? We encourage in-person attendance. However, in view of current uncertainties, the summer school is designed as hybrid, and allows remote participation if necessary. Note that remote participants have to go through the same application process as
in-person ones.
WHERE WILL PARTICIPANTS STAY? ICTP has on-campus housing that participants can book at a reasonable price.
HOW ABOUT REIMBURSEMENT FOR HOUSING AND TRAVEL? Our aim is to cover housing expenses for most or all participants during the summer school. Additionally, some summer school participants may receive support for housing during the conference (the week after the summer school), and/or a contribution towards travel expenses. One of our funding sources is ICTP, which offers partial support for participants from developing countries (this is part of ICTP's mission of encouraging the worldwide development of mathematics and physics). The Clay Foundation has awarded us a small amount of funding, for travel expenses of selected participants. Finally, we have a pending application for funding from the National Science Foundation, which if approved would provide additional resources for a number of US-based graduate students.
Organizing committee:
Paul Feehan, Lenny Ng, Peter Ozsvath, Yongbin Ruan, Paul Seidel
