- Geometria_Pisa - Mailing list — Dipartimento di Matematica, UniPI

Seminario Paolo Ghiggini domani
by Bruno Martelli 03 Apr '24

03 Apr '24

Buongiorno, Con colpevole ritardo segnalo il seminario di geometria di domani (ore 14.30 aula seminari). A presto, Bruno ----- Orbite di Reeb e invarianti di varietà suturate Paolo Ghiggini Giovedì 4 apr 2024 - 14:30 Aula Seminari (Department of Mathematics) Le orbite chiuse del flusso di Reeb di una forma di contatto producono un invariante topologico di varietà di dimensione tre detto "omologia di contatto immersa" definito da Michael Hutchings circa vent'anni fa. In seguito la definizione è stata estesa alle varietà suturate (cioè con bordo decorato da una multicurva) da Vincent Colin, Ko Honda, Michael Hutchings e me. D'altra parte l'omologia di Heegaard Floer di Ozsváth e Szabó è stata estesa alle varietà suturate da András Juhász. Nel mio seminario spiegherò i punti chiave della dimostrazione che l'omologia di Heegaard Floer e l'omologia di contatto immersa di varietà suturate sono isomorfe. Questo risultato generalizza (e utilizza) l'isomorfismo tra l'omologia di Heegaard Floer e l'omologia di contatto immersa per varietà chiuse dimostrato anni or sono da Colin, Honda e me. Tutto quello che racconterò è stato ottenuto in collaborazione con Colin e Honda.

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Seminario di geometria 26/03
by Filippo Bianchi 26 Mar '24

26 Mar '24

Carə tuttə, Il seminario di geometria di questa settimana si terrà eccezionalmente domani martedì 26 Marzo in Saletta Riunioni alle 14.30. Tanushree Shah (Universität Wien) parlerà di "Contact structures on 3-manifolds". Di seguito l'abstract. I will start by introducing contact structures. They come in two flavors: tight and overtwisted. Classification of overtwisted contact structures is well understood as opposed to tight contact structures. Tight contact structures have been classified on very few 3-manifolds. We will look at what more classification results can we hope to get using the current techniques and what is far-fetched. Le informazioni sui prossimi seminari si trovano sul sito<https://www.dm.unipi.it/en/seminars/?category=653b522f8f0af760bdc42729>. Vi aspettiamo! Buona giornata, Filippo, Giovanni e Giuseppe

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I: scuola +workshop a Roma, Nov 2024
by Paolo Lisca 20 Mar '24

20 Mar '24

Trasmetto un annuncio di scuola/workshop a Roma-Sapienza a novembre 2024. https://sites.google.com/view/cga-rome/home Paolo Lisca

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Seminari di geometria 21/03
by Filippo Bianchi 19 Mar '24

19 Mar '24

Carə tuttə, Giovedì 21 Marzo ci saranno due seminari di geometria, entrambi in Aula Seminari. Alle 11, Clara Löh (Universität Regensburg) parlerà di "A quadratic lower bound on the number of minimal gedesics". Di seguito l'abstract. A minimal geodesic on a Riemannian manifold is a geodesic line that lifts to a globally isometric geodesic line on the universal covering. Bangert proved that there is a lower bound for the number of geometrically distinct minimal geodesics of closed Riemannian manifolds that is linear in the first Betti number, using the stable norm ball on the first homology. We refine this method to obtain a quadratic lower bound. This is based on joint work with Bernd Ammann (Regensburg). Alle 14.30, Keegan Boyle (University of British Columbia) parlerà di "Alexander polynomials and symmetric knots". Di seguito l'abstract. In this talk I will discuss the extra topological information which can be extracted from the Alexander polynomial of a knot in S^3 in the case where there are certain types of symmetry on the knot. Specifically, I will discuss 2-periodic, strongly invertible, and strongly negative amphichiral knots. I will mention join work with Ahmad Issa, with Wenzhao Chen, and with Nicholas Rouse and Ben Williams. Le informazioni sui prossimi seminari si trovano sul sito<https://www.dm.unipi.it/en/seminars/?category=653b522f8f0af760bdc42729>. Vi aspettiamo! Buona giornata, Filippo, Giovanni e Giuseppe

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I: postdoc at Shenzhen International Center for Mathematics - SUSTech
by Paolo Lisca 20 Feb '24

20 Feb '24

Da: Pedro Salomão <psalomao(a)gmail.com> Inviato: martedì 20 febbraio 2024 06:26 Oggetto: postdoc at Shenzhen International Center for Mathematics - SUSTech Dear colleague, I am writing to advertise two postdoc positions in Symplectic Dynamics at Shenzhen International Center for Mathematics - SUStech. The position begins in Fall 2024. The announcement is available at https://icm.sustech.edu.cn/jobs/phd/2023-11-28.html?lang=en-us Please circulate this information to anyone who might be interested. Many thanks. Pedro Salomao

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Conference "Combinatorial and Gauge theoretical methods in low dimensional topology and geometry"
by Bruno Martelli 15 Feb '24

15 Feb '24

Dear colleagues, We are pleased to announce the conference *Combinatorial and Gauge theoretical methods in low dimensional topology and geometry* *- A conference in honour of Paolo Lisca's 60th birthday* De Giorgi Center, Pisa (Italy), June 3 -- June 7, 2024. Web page: http://www.crm.sns.it/event/519/ Note that the *registration is already open*, with a 31st of March general deadline, and a 15th of March deadline for early career researchers who are applying for funding. *Confirmed speakers:* Antonio Alfieri (CRM-ISM) Akram Alishahi (University of Georgia at Athens) Agnese Barbensi (Queensland) Daniele Celoria (Queensland) Marco Golla (Nantes) Joshua Greene (Boston College) Siddhi Krishna (Columbia) Francesco Lin (Columbia) Bruno Martelli (Pisa) Gordana Matić (Athens) Alice Merz (Lille) Brendan Owens (Glasgow) Jung Huan Park (KAIST) Steven Sivek (Imperial College) Laura Starkston (UC Davis) András Stipsicz (Rényi) Luya Wang (Stanford) *Scientific committee:* Gordana Matić (University of Georgia, Athens) Tomasz Mrowka (MIT) Peter Ozsváth (Princeton) Pisa is a very touristic city, with many cultural events organized during the month of June. We strongly encourage you to plan your trip and hotel as early as possible. *Please forward this information to anyone who might be interested.* The organising committee, Paolo Aceto, Paolo Ghiggini, Ana G. Lecuona, Francesco Lin, Bruno Martelli

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I: One year postdoctoral position at ULB
by Paolo Lisca 09 Feb '24

09 Feb '24

________________________________ Da: Mélanie Bertelson <melanie.bertelson(a)gmail.com> Inviato: venerdì 9 febbraio 2024 12:47 Oggetto: On year postdoctoral position at ULB Dear Colleagues, The Department of Mathematics of the ULB (Université libre de Bruxelles) is opening a one year postdoctoral position with teaching to start on October 1st 2024 with a possible extension by one year. The candidates should be fluent in French. More details can be found in the document attached. Please forward to whoever might be interested. Best wishes, Mélanie

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I: Summer school on GW invariants - Nantes - 11th-14th june 2024
by Paolo Lisca 07 Feb '24

07 Feb '24

Da: Erwan Brugallé <Erwan.Brugalle(a)math.cnrs.fr> Inviato: martedì 6 febbraio 2024 15:25 A: Erwan Brugallé Oggetto: Fwd: Summer school on GW invariants - Nantes - 11th-14th june 2024 -------- Message transféré -------- Dear friends and colleagues, We are pleased to announce a summer school in University of Nantes, on the topic of Gromov-Witten invariants, which will take place from 11th to 14th of June 2024. The topic is Gromov-Witten invariants, as seen both from algebraic geometric and symplectic topological viewpoints. The school is aimed at Master students and early PhDs, and mainly revolves around two mini-courses, of 5 hours in total each. One of these is offered by Amanda Hirschi and will describe the definition and use of these invariants in symplectic topology; the other will be given by Jérémy Guéré and will instead focus on the algebraic geometric side of the topic. In addition to the minicourses, there will also be two accompanying talks, to give more details about some symplectic and algebraic aspects. The schedule is light in order to leave enough time to the participants to discuss and work together over the content of the lectures, and more generally to discover each other's research interests. In particular, besides the planned invited talks, we very much welcome any short contributed talk by those participants who would like to explain their research in the context of this school. All the information, including the registration form, can be found at: https://fabiogironella.com/events/24_06_summer_school_nantes_gw_invariants/…<https://fabiogironella.com/events/24_06_summer_school_nantes_gw_invariants/…> Please forward this announcement to master and PhD students that may be interested in attending our summer school. Best regards, Fabio Gironella and Stéphane Guillermou (the organizers)

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Seminario Motegi giovedì
by Bruno Martelli 06 Feb '24

06 Feb '24

Buondì, Vorrei segnalare il seminario di topologia di giovedì prossimo. A presto, Bruno --- Thursday, Feb 8, 2024 14:30 -- 15:30 Aula Seminari Kimihiko Motegi (Nihon University) Titolo: Dehn filling and knot group Abstract: consultabile al link https://www.dm.unipi.it/en/seminar/?id=65a65946f54ae11f66d65da7

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Manifolds and Groups in Bologna, II
by Bruno Martelli 06 Feb '24

06 Feb '24

Dear all, we are pleased to announce the following event: Manifolds and Groups in Bologna, II ----------------------------------------- Date: Wednesday, Apr 17, 2024 -- Friday, Apr 19, 2024 Place: University of Bologna The aim of this workshop is to bring together young researchers working in low-dimensional topology and geometric group theory in a broad sense. The event consists in main lectures and shorter talks in order to give the opportunity to young researchers to present their own research. The workshop is hosted by the University of Bologna and it is sponsored by the GNSAGA (INdAM), PRIN "Geometry and Topology of Manifolds", Dipartimento di Matematica (Università di Bologna). Main speakers: Monika Kudlinksa (University of Oxford), Kevin Li (University of Regensburg), Maria Beatrice Pozzetti (University of Heidelberg), George Raptis (University of Regensburg), Davide Spriano (University of Oxford), Paula Truöl (MPIM Bonn). Junior speakers: Giuseppe Bargagnati (University of Pisa), Pietro Capovilla (SNS Pisa), Paolo Cavicchioli (University of Bologna), Jacopo Guoyi Chen (SNS Pisa), Gemma Di Petrillo (University of Trento), Martina Jørgensen (ETH Zurich), Giorgio Mangioni (Heriot-Watt University), Alice Merz (University of Pisa), Edoardo Rizzi (SNS Pisa), Anna Roig Sanchis (Sorbonne University), Matthias Uschold (University of Regensburg). website: https://math.unibo.it/en/events/manifolds-and-groups-in-bologna-2024 Looking forward to seeing you in Bologna, Marco Moraschini, Stefano Riolo and Filippo Sarti (University di Bologna)

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