January 2026 - Geometria_Pisa - Mailing list — Dipartimento di Matematica, UniPI

Seminario 29/01
by Andrea Tamburelli 20 Jan '26

20 Jan '26

Cari colleghi, vi segnalo il prossimo seminario di geometria, giovedì 29 gennaio alle 14:30 in aula Riunioni. Trovate qui sotto titolo e abstract. Vi esorterei, inoltre, a indicarmi nomi di persone che vorreste invitare in questi prossimi mesi per tenere seminari, in quanto abbiamo parecchi fondi per farlo. Saluti, Andrea _____________________________________ Titolo: Volumes of maximal representations into SO(2,3) Speaker: Timothe Lemistre (Nice) Abstract: Maximal representations of a surface group into a hermitian Lie group G form connected components of the character variety generalising the Teichmüller space. When G=SO(2,3), those representations act cocompactly on some convex domain in the pseudo-hyperbolic space (a pseudo-riemannian analogue of the hyperbolic space), and one can define a volume functional on the space of maximal representations. In this talk I will explain a surprising result concerning the boundedness of this volume functional.

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Newton International Fellowship
by Giovanni Italiano 16 Jan '26

16 Jan '26

Cari tutti, Pubblicizzo l'annuncio una interessante fellowship di 2 anni in UK. Serve un accademico UK come sponsor, nell'istituzione in cui si vuole andare. Nel caso qualcuno fosse interessato a lavorare in teoria geometrica dei gruppi, potrebbe contattare Dawid Kielak a Oxford kielak(a)maths.ox.ac.uk. I tempi sono stretti, la maggior parte dei dipartimenti vorrà una bozza completa per inizio febbraio. La deadline della Royal Society è l'11 Marzo. Serve avere già discusso la tesi di dottorato prima dell'11 marzo. Giovanni ------------------------------------------------------------------------ Dear All, The Royal Society has opened the call for Newton International Fellowship applications for 2026. The scheme provides the opportunity for the best early stage post-doctoral researchers from all over the world to work at UK research institutions for a period of two years. *Please note these changes from the Royal Society to the scheme this year:* *'• In order to be eligible, applicants must have been awarded their PhD or successfully defended their doctoral thesis by the closing date for applications, and have no more than five years’ active full-time postdoctoral experience post-PhD, taking into account career breaks * *• Sponsors are limited to supporting one application per round. This does not mean one application per institution, it means that each UK academic Sponsor can only support one application in any round.'* The overarching aim of the Newton International Fellowship programme is to attract and retain emerging talent in the UK and build a globally connected, mobile research and innovation workforce. The objectives are to: i. Attract talented International early career researchers to establish and conduct their research in the UK; ii. Support early career researchers to pursue high-quality and innovative lines of research; iii. Provide opportunities to acquire new skills and knowledge through training and career development; iv. Foster long-term relationships through networking opportunities and the Newton International Fellowships alumni programme. Eligibility: • Applicants must have been awarded their PhD or successfully defended their doctoral thesis by the closing date for applications. • Applicants should have no more than five years active full-time postdoctoral experience at the time of application, including teaching experience, time spent in industry on research, honorary positions and/or visiting researcher positions. • Applicants should be working outside the UK and should not hold UK citizenship at the time of application. • Applications from individuals who have not studied or worked in the UK previously are encouraged as the scheme aims to establish new links between the Applicant and the UK. • Individuals already living, working, or undertaking research in the UK are not eligible to apply. • Individuals working outside the UK but employed by a UK organisation are also not eligible to apply. • Individuals who have lived, worked or undertaken research in the UK in the 12 months prior to the application deadline are not eligible to apply, with the exception of short-term visits of less than three months in total • Applicants who completed their PhD at a UK organisation must have been working and based outside the UK for at least one year at the deadline for the application. • Applicants proposing to return to their UK-based PhD organisation and/or PhD supervisor or to their postdoctoral supervisor will normally be considered to be ineligible and so Applicants must have exceptional reasons for proposing to do so. Full details of this call and the full eligibility criteria are available here: https://royalsociety.org/grants/newton-international/ and: https://royalsociety.org/-/media/grants/newton-fellowships/newton-internati…

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Fw: Spring school "Khovanov and Floer homotopy" - Nantes - 18th-22nd May 2026
by Paolo Lisca 16 Jan '26

16 Jan '26

Buongiorno, inoltro annnuncio di scuola primaverile. Paolo ________________________________ From: Fabio Gironella <fabio.gironella(a)univ-nantes.fr> Sent: Friday, January 16, 2026 13:24 Cc: orga-school-homotopy(a)univ-nantes.fr <orga-school-homotopy(a)univ-nantes.fr> Subject: Spring school "Khovanov and Floer homotopy" - Nantes - 18th-22nd May 2026 Dear friends and colleagues, We are pleased to announce the spring school "Khovanov and Floer homotopy" at Nantes Université, which will take place from the 18th to the 22nd of May 2026. The school, aimed at Master and PhD students, will focus on recent homotopy methods in low-dimensional and symplectic topology. It will mainly revolve around two mini-courses, of four hours plus an exercise session each. The two courses will be given by Marithania Silvero Casanova<https://marithania.github.io/> (University of Seville), on Khovanov homotopy theory, and by Noah Porcelli<https://sites.google.com/view/noahporcelli/home> (Max Planck Institute, Bonn), on Floer homotopy theory. Beside the two mini-courses, there will be three introductory lessons of one hour each, as well as sessions for short talks. In particular, we welcome proposed short talks from participants who would like to talk about their research during the school. The schedule will be rather light, so enough time will be left for participants to discuss together and discover each other's research interests. Registration is open until February 28th 2026. We will be able to provide accommodation (in twin bedrooms) for a limited number of participants. You can register and apply for funding here<https://springschoolhomotopy-fabiogironella.apps.math.cnrs.fr/registration/…>. More information on the school can be found at this page: https://springschoolhomotopy-fabiogironella.apps.math.cnrs.fr/ Please forward this announcement to colleagues/students who might be interested in attending the spring school. Best regards, Fabio Gironella, Marco Golla, and Stéphane Guillermou (the organisers)

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Concorso RTT
by Bruno Martelli 15 Jan '26

15 Jan '26

Buondì, Inoltro la richiesta di dare massima diffusione a questo concorso RTT MATH-02/B a UniMORE: https://www.unimore.it/it/ateneo/bandi/procedura-di-valutazione-comparativa… A presto, Bruno

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Fw: Seminario di geometria algebrica e aritmetica, 15/01
by Francesco Sala 11 Jan '26

11 Jan '26

FYI ________________________________ Da: Tamas Szamuely <tamas.szamuely(a)unipi.it> Inviato: domenica, gennaio 11, 2026 5:05 PM A: saga(a)lists.dm.unipi.it <saga(a)lists.dm.unipi.it> Oggetto: [Saga] Seminario di geometria algebrica e aritmetica, 15/01 Cari tutti, il primo seminario di 2026 si terr�� gioved�� 15/01 in Aula Magna del dipartimento. Programma: -------------- 15:00--16:00 Francesca Pratali (Utrecht University): Localization of ��-operads Operads are combinatorial gadgets encoding categories of algebras. Introduced by May and Boardman�CVogt in the 1970s to study iterated loop spaces, they have since found applications in algebraic topology, mathematical physics, and algebraic geometry. In modern homotopy theory, categories are studied up to localization at weak equivalences (e.g. spaces up to weak homotopy equivalence, chain complexes up to quasi-isomorphism). Operads are replaced by homotopy-coherent versions: these are Lurie��s ��-operads, and Cisinski-Moerdijk-Weiss dendroidal ��-operads. In homotopical settings, ��-operads often arise via localization, the process of freely inverting a class of morphisms, as in the cases of little disks operads and factorization homology. In the first part of the talk, I will review operads and their algebras, and explain how they provide a unified framework for the homotopy theory of diverse algebraic structures. In a second part, I will focus on operadic localization. The main result I will show is that every ��-operad is weakly equivalent to the localization of a discrete operad, generalizing Joyal��s delocalization theorem for ��-categories. If time permits, I will briefly sketch the combinatorial proof using dendroidal methods and highlight some open questions. Molti saluti, Tam��s Szamuely

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