- 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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Fwd: [Junk released by Allowed List] PhD position in topology
by Bruno Martelli 24 Dec '25

24 Dec '25

---------- Forwarded message --------- Da: Stipsicz Andras <stipsicz.andras(a)renyi.hu> Date: mar 16 dic 2025 alle ore 15:27 Subject: [Junk released by Allowed List] PhD position in topology To: Stipsicz Andras <stipsicz.andras(a)renyi.hu> Dear colleague, We are writing to advertise 12 PhD scholarships with competitive salaries in low-dimensional topology, contact and symplectic geometry, and singularity theory, with starting date 1st September 2026. The positions are part of the newly-established doctoral network “Top-SCoLDS”. The successful candidates will be enrolled in a PhD program in one of the main nodes of the doctoral network (Budapest, Glasgow, Nantes, Regensburg, and Vienna), and are expected to spend time at other nodes. The idea at the core of the network is to create a cohort of PhD students with shared research interests, who will have plenty of opportunities to travel and meet the other fellow students and supervisors. Applications are now open, until 15th January 2026, at the following webpage: https://topscolds.renyi.hu/ <https://topscolds.renyi.hu/index.html> On the same page you will find all the information for the applicant, including the potential supervisors, their interests, and the mobility requirements. Please forward this email to any interested students. Kind regards, András Stipsicz (on behalf of all PIs)

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Seminario oggi alle 16
by Bruno Martelli 15 Dec '25

15 Dec '25

Buondì, Con colpevolissimo ritardo vi annuncio il seminario di geometria di oggi, che sarà alle 16 in aula N. Siete tutti invitati. A presto Bruno Martelli Aspherical 4-manifolds with positive Euler characteristic – Pietro Capovilla (SNS, Pisa) Monday, Dec 15, 2025 16:00 — 17:00 Aula N (Polo Fibonacci, University of Pisa) Seminars <https://www.dm.unipi.it/en/en/seminars>, Geometry Seminar <https://www.dm.unipi.it/en/en/seminars/?category=653b522f8f0af760bdc42729> I will present an explicit construction of closed oriented aspherical smooth 4-manifolds realizing every non-negative Euler characteristic. This family of manifolds saturates Hopf-Thurston conjecture on the Euler characteristic of aspherical manifolds, as well as Gromov-Lück inequality regarding their geography.

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Fwd: I: Seminario e incontro preliminare corso
by Bruno Martelli 09 Dec '25

09 Dec '25

Inoltro annuncio di seminario e corso di dottorato Bruno ---- Carissimi, volevo segnalarvi che *lunedi' 15 dicembre alle 11:00 in saletta riunioni* (primo piano del dipartimento di Matematica) ci sara' un seminario <https://www.dm.unipi.it/en/seminar/?id=6936a4ac38884977206bfeaf> di Tullio Ceccherini-Silberstein (titolo e abstract qui sotto), e a seguire, *alle 12:00*, ci sara' l'incontro preliminare (con presentazione) del corso "Geometric group theory and dynamical systems" (a questo link <https://www.dm.unipi.it/phd/ph-d-courses/ph-d-courses-2025-2026/> potete trovare un abstract del corso) di 30 ore che Tullio terra' qui da noi a Pisa nel periodo febbraio-aprile 2026. Oltre che a dottorandi e ricercatori, il corso sara' accessibile anche a studenti di magistrale motivati. Chi non puo' partecipare ma e' interessato al corso, e' pregato di contattare Tullio via email (tullio.cs(a)sbai.uniroma1.it) Poiche' gli argomenti del seminario e del corso sono all'intersezione di tante discipline matematiche (algebra, geometria, topologia, sistemi dinamici, combinatoria, probabilita'), vi prego di girare questo messaggio a chi pensate possa essere interessato, grazie. Saluti, Michele TITLE: A Garden of Eden Theorem for Smale Spaces. ABSTRACT: Smale spaces were introduced in the late 1970s by David Ruelle in his influential monograph on thermodynamic formalism. These dynamical systems include: Anosov diffeomorphisms, non-wandering sets of Smale's Axiom A diffeomorphisms, various types of solenoids and attractors, as well as (in a symbolic dynamical setting) subshifts of finite type. In a recent joint work with Michel Coornaert, we proved, among other things, a Garden of Eden type theorem (GOET) for irreducible Smale spaces. This generalizes previous results by Fiorenzi (GOET for irreducible subshifts of finite type) and ours (GOET for Anosov diffeomorphisms on tori).

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Conferenza "Homology and homotopy in the world of graphs"
by Carlo Collari 27 Nov '25

27 Nov '25

Buongiorno, Inoltro con piacere per tutti gli interessati. A presto, Carlo ----------------------------- Ciao Carlo, con Henri Riihimäki stiamo organizzando la conferenza "Homology and homotopy in the world of graphs" al Bernoulli center in Lausanne, dal 14 al 18 settembre 2026: https://sites.google.com/view/hhgraphs Gli speaker saranno: Yasuhiko Asao (Fukuoka University) Richard Hepworth (University of Aberdeen) Kathryn Hess (EPFL) Chris Kapulkin (University of Western Ontario) Yuri Muranov (Uniwersytet Warmińsko-Mazurski) Viktoriya Ozornova (Max Planck Institute for Mathematics, Bonn) Antonio Rieser (CIMAT) Daniela Egas Santander (Max Planck Institute) Radmila Sazdanovic (North Carolina State University) Laura Scull (Fort Lewis College) Le registrazioni sono aperte fino al 31 dicembre e partecipanti interessati possono scrivere all'indirizzo email hh.wgraph(a)gmail.com o possono direttamente contattare gli organizzatori. Potresti condividere l'evento con chi pensi possa essere interessato? Grazie mille! Tanti saluti, Luigi

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Fwd: Dubrovin medal
by Bruno Martelli 20 Nov '25

20 Nov '25

---------- Forwarded message --------- Da: <giuseppe.marino(a)unina.it> Date: Gio 20 Nov 2025, 07:06 Subject: Dubrovin medal To: <gnsaga-aderenti(a)altamatematica.it> Care colleghe e cari colleghi, desidero segnalarvi la nuova Call for Nominations per la Boris Dubrovin Medal, istituita dalla SISSA con il supporto della Moscow Mathematical Society, del GNFM e del GNSAGA, in memoria di Boris Anatolievich Dubrovin, che è stato Professore alla SISSA dal 1993 al 2019. Cordiali saluti, Giuseppe ------------------- Giuseppe Marino Università degli Studi di Napoli Federico II Via Cintia, Complesso di Monte S. Angelo 81026 Napoli Tel: +39081675725 ---------------------------------------------- *Dubrovin medal call for nomination* The International School for Advances Studies, (SISSA), with the support of the Moscow Mathematical Society, GNFM and GNSAGA has established the Boris Dubrovin Medal in memory of Boris Anatolievich Dubrovin, who has been Professor at SISSA from 1993 to 2019. This award recognizes exceptionally promising young researchers who have already made outstanding contributions to the fields of mathematical physics and geometry. The recipient of the award will receive a monetary prize of 5,000 euros, made possible thanks to the contribution of SISSA-Medialab and Springer journal Letters in Mathematical Physics. In case of more than one recipient, the prize will be equally split among recipients. Requirements: Ph.D. obtained within 2016 with 2 years extension for maternity leave for each child. There are no nationality restrictions. Nominations must be sent by the *31st of January 2026* to the address dubrovin_medal(a)sissa.it. Further details for submitting a nomination in the attached file.

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