- Geometria_Pisa - Mailing list — Dipartimento di Matematica, UniPI

Fwd: Seminario informale di topologia mercoledì alle 11
by Bruno Martelli 16 Jun '21

16 Jun '21

Buonasera, Il seminario di domani alle 11 è confermato e c'è posto per tutti quelli che mi hanno fatto richiesta. Sarà anche trasmesso su google meet a questo indirizzo: https://meet.google.com/xsu-ubdz-grm (a meno ovviamente di inconvenienti tecnici) A domani, Bruno ---------- Forwarded message --------- From: Bruno Martelli <bruno.martelli(a)unipi.it> Date: Fri, Jun 11, 2021 at 5:02 PM Subject: [Geometria_pisa] Seminario informale di topologia mercoledì alle 11 To: Geometria <Geometria_Pisa(a)mail.dm.unipi.it> Buongiorno, Mercoledì prossimo alle 11 in Aula Magna Ludovico Battista terrà un seminario informale in cui ci spiegherà come sia possibile dimostrare la rigidità di varietà iperboliche di volume infinito in dimensione 4 a 5 abbastanza complesse. In Aula Magna ci sono massimo 25 posti e confido che siano sufficienti, chiedo però alle persone interessate di comunicarmi la loro presenza entro lunedì sera (anche perché vorrei usare l'aula lo stesso giorno anche per fare esami). Se qualcuno vuole seguire on-line basta che mi scriva (entro martedì) e ci adoperiamo con l'attrezzatura. Seguono titolo e abstract. A presto, Bruno ---- Titolo: Infinitesimal Deformations of Hyperbolic Manifolds Abstract: in the last two years, the refinement of a tool due to Jankiewicz - Norin - Wise based on Betsvina - Brady theory led to important results. This work culminated with the amazing example of Italiano - Martelli - Migliorini of a Hyperbolic 5-Manifold M which fibers over S^1. The importance of the existence of such a manifold appears to go far beyond the world of Hyperbolic Manifolds. One interesting aspect of this family of examples is that they can be manipulated combinatorially. This allows us to study the dimension of infinitesimal deformations of the hyperbolic structure of the cover M̃ associated to the map M -> S^1. The complexity of the task, though, required the exploitation of a series of methods to overcome the computational problems. In particular, we will talk about the Groupoid associated with a cube complex and how we used it to obtain the rigidity of M̃.

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Seminario informale di topologia mercoledì alle 11
by Bruno Martelli 11 Jun '21

11 Jun '21

Buongiorno, Mercoledì prossimo alle 11 in Aula Magna Ludovico Battista terrà un seminario informale in cui ci spiegherà come sia possibile dimostrare la rigidità di varietà iperboliche di volume infinito in dimensione 4 a 5 abbastanza complesse. In Aula Magna ci sono massimo 25 posti e confido che siano sufficienti, chiedo però alle persone interessate di comunicarmi la loro presenza entro lunedì sera (anche perché vorrei usare l'aula lo stesso giorno anche per fare esami). Se qualcuno vuole seguire on-line basta che mi scriva (entro martedì) e ci adoperiamo con l'attrezzatura. Seguono titolo e abstract. A presto, Bruno ---- Titolo: Infinitesimal Deformations of Hyperbolic Manifolds Abstract: in the last two years, the refinement of a tool due to Jankiewicz - Norin - Wise based on Betsvina - Brady theory led to important results. This work culminated with the amazing example of Italiano - Martelli - Migliorini of a Hyperbolic 5-Manifold M which fibers over S^1. The importance of the existence of such a manifold appears to go far beyond the world of Hyperbolic Manifolds. One interesting aspect of this family of examples is that they can be manipulated combinatorially. This allows us to study the dimension of infinitesimal deformations of the hyperbolic structure of the cover M̃ associated to the map M -> S^1. The complexity of the task, though, required the exploitation of a series of methods to overcome the computational problems. In particular, we will talk about the Groupoid associated with a cube complex and how we used it to obtain the rigidity of M̃.

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Conferenza Swiss Knots
by Bruno Martelli 07 Jun '21

07 Jun '21

Dal vivo, dal 6 al 9 luglio, questo il link: https://homeweb.unifr.ch/liechtli/pub/swissknots21/index.html

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Fwd: [gdrtresses] Braids and beyond / Tresses et perspectives, Conference in memory of Patrick Dehornoy
by Bruno Martelli 05 Jun '21

05 Jun '21

---------- Forwarded message --------- From: wagner(a)imj-prg.fr <wagner(a)imj-prg.fr> Date: Fri, Jun 4, 2021 at 5:05 PM Subject: [gdrtresses] Braids and beyond / Tresses et perspectives, Conference in memory of Patrick Dehornoy To: gdrtresses(a)listes.math.cnrs.fr <gdrtresses(a)listes.math.cnrs.fr> ********************************** Dear colleagues, The meeting "Braids and beyond / Tresses et perspectives, Conference in memory of Patrick Dehornoy" that was planned for last September will now take place from the 8th to the 10th of September 2021 at the University of Caen. It will be hybrid, and participants will be able to attend the meeting online. Depending on the situation with the pandemic at the time of the meeting, it should also be possible for some participants to take part in person, within the limit on the number of places imposed by our university. If you wish to attend the meeting, either virtually or online, please fill in the registration form on the website of the meeting: https://conf.lmno.cnrs.fr/Braids2020/index.html To avoid confusion, we will start the registration process from scratch. In particular, if you registered for the meeting last year and wish to attend, please re-register. The list of speakers may also be found on the website. Please feel free to circulate this message to anyone who may be interested. For all inquiries, the contact address is: lmno.braids2020 at unicaen.fr. Best wishes, the Organising Committee (Paolo Bellingeri, Eddy Godelle, John Guaschi, Victoria Lebed, Bernard Leclerc, Gilbert Levitt, Friedrich Wehrung). **********************************

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Conferenza a Ventotene - settembre 2021
by Bruno Martelli 01 Jun '21

01 Jun '21

Buondì, Magno gaudio nuntio vobis che la consueta biennale conferenza a Ventotene è confermata anche per quest'anno. Questa è la home page: https://www.ventoteneinternationalworkshops.net/ <https://www.ventoteneinternationalworkshops.net/> Counting problems - Ventotene International Workshops <https://www.ventoteneinternationalworkshops.net/> www.ventoteneinternationalworkshops.net

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Fwd: [gdrtresses] WinterBraids XI
by Bruno Martelli 31 May '21

31 May '21

---------- Forwarded message --------- From: wagner(a)imj-prg.fr <wagner(a)imj-prg.fr> Date: Mon, May 31, 2021 at 6:32 AM Subject: [gdrtresses] WinterBraids XI To: gdrtresses(a)listes.math.cnrs.fr <gdrtresses(a)listes.math.cnrs.fr> ***************************************************** Winterbraids XI --- first new announcement School on braids and low-dimensional topology Dijon, December 13-17 2021 ****************************************************** Winterbraids XI is the 11th edition of an itinerant school on braids and low-dimensional topology, that will be held at Institut Mathématique de Bourgogne (Dijon) from December 13th to 17th, 2021. The school consists on four 3-hours mini-courses: Gwénaël Massuyeau (Université de Bourgogne): Surgery equivalence relations for 3-manifolds. Arunima Ray (Max Planck Institut, Bonn): Slice knots and knot concordance. Gerhard Roehrle (Ruhr-Universität, Bochum): On the K(π,1) problem in hyperplane arrangements. Ramanujan Santharoubane (Université Paris Sud): Applications of quantum representations of mapping class groups. These will be completed by short talks and a poster session devoted to student presentations (not necessarily focused on braids or their generalizations). The school will start on Monday morning and will end on Thursday at noon. On the website of the school, there is a pre-registration form, to be filled BEFORE 01/10/2021 . Selected participants will be contacted afterwards to confirm their registration. We will support living expenses for all confirmed registered students and postdocs. The school will be mainly supported by the Conseil Regional Bourgogne Franche-Comté, the Université de Bourgogne, the GDR Tresses and ANR projects AlMaRe. Further details on the school programme and registration procedure can be found at the page: http://winterbraids.math.cnrs.fr/winterbraids11/ For any other queries, please contact the organizers at winterbraids AT yahoo.fr Organizers: Paolo Bellingeri (Université de Caen Normandie) Vincent Florens (Université de Pau et des pays de l'Adour) Jean-Baptiste Meilhan (Université Grenoble-Alpes) Luis Paris (Université de Bourgogne) Emmanuel Wagner (Université de Paris)

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Fwd: Assegno di ricerca - comunicazione pubblicazione bando
by Paolo Lisca 26 May '21

26 May '21

Inoltro avviso di bando per assegno di ricerca in geometria -- scadenza 25 giugno 2021. Paolo Lisca ------- Messaggio inoltrato ------- Da: Concorsi Assegni <concorsi_assegni(a)unipi.it> Oggetto: Assegno di ricerca - comunicazione pubblicazione bando Data: Wed, 26 May 2021 13:43:51 +0200 Gentili Professori, trasmetto la comunicazione in oggetto. Il bando è pubblicato al seguente link https://www.unipi.it/ateneo/bandi/assegni/2021/mat/25giu2021/index.htm La scadenza per la presentazione delle domande è il 25 giugno alle ore 13. Cordiali saluti Patrizia Montelatici Unità Programmazione e reclutamento del personale docente, degli assegnisti di ricerca e del personale tecnico amministrativo a tempo indeterminato Tel. 050 2212147 patrizia.montelatici(a)unipi.it

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Fwd: [gdrtresses] Rencontres du GDR Tresses
by Bruno Martelli 15 May '21

15 May '21

Buondì, Segnalo conferenza in topologia, Bruno ---------- Forwarded message --------- From: wagner(a)imj-prg.fr <wagner(a)imj-prg.fr> Date: Tue, May 11, 2021 at 10:37 AM Subject: [gdrtresses] Rencontres du GDR Tresses To: gdrtresses(a)listes.math.cnrs.fr <gdrtresses(a)listes.math.cnrs.fr> FRANCAIS : *************** Suite à son renouvellement récent, le GDR «Tresses » tiendra ses prochaines rencontres du 30 août au 3 septembre 2021. Ces rencontres auront lieu à l'Institut de Mathématiques de Bourgogne (IMB, Dijon) et, pour cette année-ci, l'accent sera mis sur la topologie de petite dimension avec notamment deux mini-cours par F. Costantino et J. Marché. Pour de plus amples informations, rendez-vous s'il vous plait sur http://detcherry.perso.math.cnrs.fr/GDR_Dijon.html la date limite pour vous inscrire étant le 30 juin 2021. ENGLISH : ************* Following its recent renewal, the GDR «Braids » will hold its next meeting from August 30 to September 3, 2021. This meeting will take place at the Institute of Mathematics of Burgundy (IMB, Dijon) and, for this year, the emphasis will be on low-dimension topology, with two mini-courses by F. Costantino and J. Marché. For more information, please visit http://detcherry.perso.math.cnrs.fr/GDR_Dijon.html the deadline for registration being June 30, 2021.

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Seminario Karl Schwede
by Amos Turchet 07 Apr '21

07 Apr '21

Cari colleghi, vi segnalo il seguente seminario che potrebbe essere di interesse: SEMINARIO Karl Schwede (University of Utah) Titolo: Recent progress in mixed characteristic higher dimensional algebraic geometry geometry Giovedi' 8 Aprile 2021 ORE 18:00 Dipartimento di Matematica e Fisica Universita' degli Studi Roma Tre (online) Abstract In characteristic zero birational algebraic geometry, Kawamata-Viehweg vanishing is a centrally important tool. For some applications in characteristic p > 0, one may use Frobenius and perturbations as a replacement for resolution of singularities and Kawamata-Viehweg vanishing. This talk will show how to use Bhatt's vanishing theorem for absolute integral closures mixed characteristic as a replacement for resolutions and Kawamata-Viehweg vanishing theorems in a number of applications. This is joint work with B. Bhatt, L. Ma, Z. Patakfalvi, K. Tucker, J. Waldron and J. Witaszek. Per partecipare al seminario cliccare sul seguente Link: https://teams.microsoft.com/dl/launcher/launcher.html?url=%2F_%23%2Fl%2Fmee… <https://teams.microsoft.com/dl/launcher/launcher.html?url=/_#/l/meetup-join…> — Amos Turchet Dipartimento di Matematica e Fisica Università degli studi Roma Tre Mailto: amos.turchet(AT)uniroma3.it Website: amosturchet.github.io <http://amosturchet.github.io/>

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Rtd B in geometria a Bologna
by Bruno Martelli 03 Apr '21

03 Apr '21

Buondì, Stefano Francaviglia mi segnala un posto Rtd B in geometria a Bologna, con scadenza entro breve (13 aprile). Questo il link: https://bandi.unibo.it/s/apos5/rif-1418-bando-per-1-posto-da-ricercatore-a-… Buone feste, Bruno

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