- Geometria_Pisa - Mailing list — Dipartimento di Matematica, UniPI

Fw: Job opportunities at Rényi Institute
by Paolo Lisca 19 Nov '25

19 Nov '25

Inoltro annuncio di posizioni all'istituto Rényi. Paolo Lisca ________________________________ From: Marco Marengon <marengonm(a)gmail.com> Sent: Tuesday, November 18, 2025 21:52 Subject: Job opportunities at Rényi Institute Dear colleague, We just posted some announcements for jobs at the Rényi Institute, starting in September 2026: https://www.renyi.hu/en/open-positions These include several postdoc positions, including one specifically in low-dimensional topology, as well as some tenured positions. All positions come with no teaching load. More information at the link above. I would be grateful if you could forward this to anyone who might be interested. My best wishes, M

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Fwd: Advertisement - endowed chair position and postdocs (UVA) and positions at Lodha Institute (Mumbai)
by Bruno Martelli 04 Nov '25

04 Nov '25

---------- Forwarded message --------- Da: Maloni, Sara (sm4cw) <sm4cw(a)virginia.edu> Date: mar 28 ott 2025 alle ore 13:33 Subject: Re: Advertisement - endowed chair position and postdocs (UVA) and positions at Lodha Institute (Mumbai) To: Koberda, Thomas M (tmk5a) <tmk5a(a)virginia.edu> Dear colleagues, Sorry for the second email, but I wanted to send you the link of our postdoc positions. The Mathematics Department at the University of Virginia invites applications for various 3 year postdoctoral positions in Geometric Group Theory and its connections to Algebraic Combinatorics, Analytic Number Theory, Geometric Group Theory, Geometric Topology, Geometry and Probability, Logic, Group Actions on Manifolds. Information about this position can be found on Math Jobs below: - https://www.mathjobs.org/jobs/list/27417 - https://www.mathjobs.org/jobs/list/27418 (Please also apply: - https://uva.wd1.myworkdayjobs.com/.../Research-Associate... <https://uva.wd1.myworkdayjobs.com/UVAJobs/job/Charlottesville-VA/Research-A…> - https://uva.wd1.myworkdayjobs.com/.../Whyburn-Research... <https://uva.wd1.myworkdayjobs.com/UVAJobs/job/Charlottesville-VA/Whyburn-Re…> ) Feel free to forward to anyone who might be interested. If you have any question, please ask us. Best, Sara and Thomas -- Sara Maloni Department of Mathematics University of Virginia https://sites.google.com/view/sara-maloni/ Pronouns: she/her/hers ------------------------------ *From:* Maloni, Sara (sm4cw) <sm4cw(a)virginia.edu> *Sent:* Monday, October 6, 2025 9:37 AM *To:* Koberda, Thomas M (tmk5a) <tmk5a(a)virginia.edu>; Maloni, Sara (sm4cw) < sm4cw(a)virginia.edu> *Cc:* Bergner, Julie (jeb2md) <jeb2md(a)virginia.edu> *Subject:* Advertisement - endowed chair position and postdocs (UVA) and positions at Lodha Institute (Mumbai) Dear colleagues and friends, We are writing to advertise: 1. A* full professor, endowed chair position (*Mary Ann Pitts Jefferson Scholars Foundation Distinguished Professorship in Mathematics) at the University of Virginia: https://www.mathjobs.org/jobs/list/2517 It comes with a sabbatical leave after every six semesters of teaching, and this person will have access to annual research funds. It seems that other aspects of the professions are negotiable, as it is always in this situation. 2. Several * postdoctoral positions *at UVA with priority in Analytic Number Theory, Geometric Group Theory, Geometric Topology and Geometry. (Mathjobs ad coming soon and no citizen requirement.) 3. A *semester *on "Analytic group theory" and "Surface group representations" at the new Lodha Mathematical Sciences Institute in Mumbai, India (July to December 2026). Funding is available for *Research Fellow *positions (3 weeks or more), and *Postdoctoral Fellows*. Please apply via mathjobs here: https://www.mathjobs.org/jobs/3627. More details will be posted in the coming months at the conference website: https://sites.google.com/view/lmsi-fall2026/home We are asking to please consider these positions and/or please forward the announcement to anyone who you think might be interested. (Last year's search was unsuccessful, as many of you know.) We do not require recommendation letters for the endowed chair position at this stage, so hopefully the application process is quite light. If you have any question, please do not hesitate to ask. Personally, I hope we will hire a person who is a good fit, but also someone who is a "good colleague" and in our field we are lucky that this seems often to be the case. 🙂 Thank you very much in advance for helping us to advertise these opportunities. Best wishes, Sara and Thomas -- Sara Maloni Department of Mathematics University of Virginia https://sites.google.com/view/sara-maloni/ Pronouns: she/her/hers

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Fwd: tenure-track researcher (RTT) positions in L' Aquila
by Bruno Martelli 27 Oct '25

27 Oct '25

---------- Forwarded message --------- Da: Barbara Nelli <barbara.nelli(a)univaq.it> Date: Dom 26 Ott 2025, 11:51 Subject: tenure-track researcher (RTT) positions in L' Aquila To: Barbara Nelli <barbara.nelli(a)univaq.it> Dear colleague, The University of L' Aquila announces the opening of a tenure-track researcher (RTT) positions in Geometry: English: https://www.univaq.it/en/include/utilities/blob.php?table=concorso_doc&id=4… Italian: https://www.univaq.it/include/utilities/blob.php?table=concorso_doc&id=424&… The deadline for submitting applications is *22 November, at 11:00 pm (GMT+1).* We would greatly appreciate your assistance in sharing this announcement with potential candidates who may be interested. If you need any further information, please do not hesitate to contact me. Thank you! Best wishes, Barbara

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Seminario Geometria domani 21 ottobre ore 11 - Serge Cantat
by Filippo Sarti 20 Oct '25

20 Oct '25

Buongiorno, Vi segnalo che Serge Cantata (CNRS, Université de Rennes) terrà il prossimo seminario di Geometria domani Martedì 21 ottobre alle ore 11:00 presso l'aula Seminari. Allego titolo e abstract Titolo: Dynamics on the Markov surface Abstract: The Markov surface parametrizes certain representations of the free group of rank 2 in the group of matrices SL_2. The group of automorphisms of the free group acts on this algebraic surface by polynomial automorphisms. I will describe some dynamical properties of this action. This is related to hyperbolic geometry and holomorphic dynamics. A presto Filippo

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Fwd: [rtop] Postdoctoral Fellowship in Topology and Representation Theory - Université Clermont Auvergne (Clermont-Ferrand, France)
by Bruno Martelli 13 Oct '25

13 Oct '25

---------- Forwarded message --------- Da: <wagner(a)imj-prg.fr> Date: Lun 13 Ott 2025, 11:09 Subject: [rtop] Postdoctoral Fellowship in Topology and Representation Theory - Université Clermont Auvergne (Clermont-Ferrand, France) To: <rtop(a)listes.math.cnrs.fr> Postdoctoral Fellowship in Topology and Representation Theory - Université Clermont Auvergne (Clermont-Ferrand, France) We invite applications for a Postdoctoral Research Fellowship in Topology and Representation Theory at the Laboratoire de Mathématiques Blaise Pascal, Université Clermont Auvergne (Clermont-Ferrand, France). The duration of the fellowship is for 3 years, with a net salary of approximately 2400 euros per month. The position is funded by the ANR-24-CPJ1-0026-01 as part of the CPJ (Chaire de Professeur Junior) funding of Cristina Palmer-Anghel. The research activity and background of the candidate are expected to be in one of the following areas: topology with focus on the study of (quantum) knot and 3-manifold invariants, categorifications, or representation theory of quantum groups. The position provides the opportunity to join an active research group and develop new collaborations. Financial funding for travel and research visits will be available. The application material should contain: - CV; - research statement; - list of publications; - 2 recommendation letters; and should be submitted to cristina.anghel(a)uca.fr . The deadline for applications is the 31st December 2025. Best regards, Cristina Palmer-Anghel

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Reading group on Algebra and Geometry of quantum link homologies
by Carlo Collari 11 Oct '25

11 Oct '25

Dear all, We would like to advertise a reading group on the relations between knot homologies (Khovanov-Rozansky homologies), algebraic geometry and representation theory. The plan is to follow the survey article by Gorsky-Kivinen-Simental (you can find it attached), based on the Lecture Notes of IHES summer school of 2021, adding some more context and background. The seminars should be accessible to a broad audience without prior knowledge of knot theory or algebraic geometry. The reading group will consist of 2h talks given by the participants. A preliminary encounter will be held online on Wednesday October 15 at 16:00 (CEST) at the following link: Argomento: Preliminary meeting lecture group KR Ora: 15 ott 2025 03:45 PM Roma Entra nella riunione in Zoom https://sissa-it.zoom.us/j/87888698027?pwd=QTC9PP0fX7zNkFsRDNjNvvadnBrYIK.1 ID riunione: 878 8869 8027 Codice d’accesso: 757115 During this meeting we will decide the subdivision of the talks (we estimate 10-12 talks) and the schedule. Those who are interested but cannot attend the preliminary meeting are encouraged to write to us. All the best, Valentina Bais, Carlo Collari, Lucrezia Beatrice Lorenzi.

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Fwd: [Junk released by Allowed List] [CENTRO DE GIORGI] -- ANNOUNCEMENT -- COLLOQUIO DE GIORGI - PROF. SERGE CANTAT (October 8th, 2025)
by Bruno Martelli 26 Sep '25

26 Sep '25

Buondì, Mi permetto di consigliare a tutti la presenza a questo seminario. Cantat è uno speaker eccellente. Buno ---------- Forwarded message --------- Da: CRM <crm(a)sns.it> Date: gio 25 set 2025 alle ore 12:05 Subject: [Junk released by Allowed List] [CENTRO DE GIORGI] -- ANNOUNCEMENT -- COLLOQUIO DE GIORGI - PROF. SERGE CANTAT (October 8th, 2025) To: <crm(a)sns.it> Cc: <crm(a)sns.it> *Colloquio De Giorgi* *8* *October** 2025 ore 4:00 pm* Aula Dini, Palazzo del Castelletto, via del Castelletto, Pisa <https://www.google.it/maps/place/Palazzo+del+Castelletto/@43.7183335,10.398…> Prof. *SERGE* *CANTAT* Université de Rennes Title: *Degree Growth * Abstract : Consider a polynomial transformation f of a vector space V and iterate f; that is, compose f with itself, and then with f again, etc. Doing so, one gets a sequence of polynomial transformations f^n. Computing the degree of the formulas defining f^n, one obtains a sequence of integers deg(f^n). The problem I will discuss is : what type of sequences do we obtain in this way? For instance, in dimension 2, the degree of f(x,y)=(y,xy) is 2, then the degree of f^2(x,y)=(xy, xy^2) is 3, then f^3(x,y)=(xy^2,x^2y^3) has degree 5, … and the degree of f^n is given by a sequence which is well known in Pisa. The question is related to dynamical systems, basic algebraic geometry, and some number theory. No previous knowledge will be assumed. *Web site: *https://crmdegiorgi.sns.it/evento/colloquio-de-giorgi-2024-2025/ *The event will take place in person.* Those who are unable to be physically present may attend the talk via zoom by following the link: *https://us02web.zoom.us/j/81126340951?pwd=cUQ2SldDK0xKU3hqdENEU3FiUXNkUT09 <https://us02web.zoom.us/j/81126340951?pwd=cUQ2SldDK0xKU3hqdENEU3FiUXNkUT09>* *Luisa Ferrini* *Centro di Ricerca Matematica* Ennio De Giorgi Palazzo Puteano Piazza <https://www.google.com/maps/search/Piazza+dei+Cavalieri+3?entry=gmail&sourc…> <https://www.google.com/maps/search/Piazza+dei+Cavalieri+3?entry=gmail&sourc…> dei <https://www.google.com/maps/search/Piazza+dei+Cavalieri+3?entry=gmail&sourc…> <https://www.google.com/maps/search/Piazza+dei+Cavalieri+3?entry=gmail&sourc…> Cavalieri <https://www.google.com/maps/search/Piazza+dei+Cavalieri+3?entry=gmail&sourc…> 3 <https://www.google.com/maps/search/Piazza+dei+Cavalieri+3?entry=gmail&sourc…> 56126 PISA

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Seminario Martedì 30 Settembre - François Bacher
by Filippo Sarti 25 Sep '25

25 Sep '25

Buongiorno, Vi segnalo che François Bacher (Dijon) terrà il prossimo seminario di Geometria in data Martedì 30 Settembre alle ore 14:30 presso l'aula Seminari. Per gli interessati ad andare a pranzo con lo speaker, potete contattare Fabrizio Bianchi (in copia). L'appuntamento è in atrio alle 12:45. Allego titolo e abstract. Titolo: Hénon maps and Kato surfaces Abstract: Friedland and Milnor showed that among the polynomial automorphisms of the affine complex plane, the only ones dynamically non-trivial are the Hénon maps. Considering their birationnal extension to the projective plane, these maps admit a super-attracting point at infinity. Dloussky and Oeljeklaus noticed that one could compactify the quotient by the dynamics of its basin of attraction into a Kato surface. I will recall the construction of such surfaces, and talk about a recent result, according to which the obtained Kato surface completely characterizes the Hénon automorphism; conversely, one obtains the description of the space of Kato surfaces coming from Hénon maps. A presto, Filippo

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Fw:
by Paolo Lisca 20 Aug '25

20 Aug '25

Giro questo annuncio per gli eventuali interessati. Paolo Lisca ________________________________ From: Marc Kegel <kegelmarc87(a)gmail.com> Dear all, I’m starting a new position in Seville this September. It’s not permanent, but it runs for five years, so at least there’s a bit of stability! As part of the position, I’ve received funding to organize scientific events. Together with Marithania Silvero, I’m planning a small workshop on branched covers in Seville, scheduled for November 17–21, 2025. Motivation We’ve noticed that many younger researchers in our field (including ourselves) are familiar with modern invariants like Khovanov homology and Heegaard Floer theory, but often have little exposure to more classical topics such as branched covers. Our aim is to revisit the foundations through accessible, in-depth lectures by leading experts. Planned format * Morning: Lecture series by 2–3 invited speakers * Afternoon: Group discussions exploring the lectures and brainstorming small research projects * Late afternoon: Short participant talk to cap off the day The atmosphere will be informal and collaborative, with a small group to encourage interaction and discussion. We also hope the workshop will spark new collaborations and ideas. I already have a list of interesting questions, and more will certainly arise during the lectures. Confirmed / tentative speakers for the minicourses * Luisa Paoluzzi – Knot detection via branched covers: in what sense a knot is or isn’t determined by its branched covers. * Marco Golla (to be confirmed) – Applications of branched covers, based on his lecture notes (https://www.math.sciences.univ-nantes.fr/~golla/docs/courses/notes_0401.pdf…) * Third speaker (possibly me) – Proof that every 3-manifold is a 3-fold branched cover of a knot in S3, the existence of universal links (i.e. a link L in S3 such that every 3-manifold arises as a branched cover over L), and a complete set of moves for branched covers. Funding We expect to cover shared-room accommodation for participants. Unfortunately, we will likely not be able to support travel costs. Interested? If you’d like to join, please: 1. Mark the week in your calendar, and 2. Email me briefly, indicating whether you would like accommodation covered. Please do not book travel yet — I’ll confirm exact funding details and the final participant list in September, possibly with a simple webpage. Looking forward to hearing from you! All the best, Marc

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Seminario Giovedì 17 Luglio - Muhan Luo
by Carlo Collari 14 Jul '25

14 Jul '25

Buongiorno, Vi segnalo che Muhan Luo (National University of Singapore) terrà il prossimo seminario di Geometria in data Giovedì 17 Luglio alle ore 14:30 presso l'aula Riunioni. Per gli interessati ad andare a pranzo con lo speaker, potete contattare Fabrizio Bianchi (in copia). L'appuntamento è in atrio alle 12:45. Allego titolo e abstract Titolo: Equidistribution of saddle periodic points of Henon-like maps Abstract: We prove that under the natural assumption over the dynamical degrees, the saddle periodic points of a Henon-like map in any dimension equidistribute with respect to the equilibrium measure. Our work generalizes results of Bedford-Lyubich-Smillie, Dujardin and Dinh-Sibony along with improvements of their techniques. We also investigate some fine properties of Green currents associated with the map. This is a joint work with Qi Zhou. A presto Carlo

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