- Geometria_Pisa - Mailing list — Dipartimento di Matematica, UniPI

Fwd: Assegni di ricerca
by Bruno Martelli 29 Oct '20

29 Oct '20

Segnalo assegni di ricerca a Bologna. ---------- Forwarded message --------- From: Giovanni Dore <giovanni.dore(a)unibo.it> Date: Thu, Oct 29, 2020 at 10:41 AM Subject: Assegni di ricerca To: Dipartimento di Matematica — docenti di struttura e sottostrutture < mat.docenti.all(a)unibo.it> Cari colleghi, ricordo che è ancora aperto il bando per due assegni di ricerca di dipartimento, si può trovare all’indirizzo https://bandi.unibo.it/ricerca/assegni-ricerca?id_bando=52894 Il bando scade il 9 novembre. Cordiali saluti Giovanni Dore

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Fwd: RTG/Whyburn postdoctoral positions at the University of Virginia
by Bruno Martelli 27 Oct '20

27 Oct '20

---------- Forwarded message --------- From: Maloni, Sara (sm4cw) <sm4cw(a)virginia.edu> Date: Mon, Oct 26, 2020 at 6:55 PM Subject: RTG/Whyburn postdoctoral positions at the University of Virginia To: Maloni, Sara (sm4cw) <sm4cw(a)virginia.edu> Cc: Koberda, Thomas (tmk5a) <tmk5a(a)virginia.edu>, Ershov, Mikhail V (mve2x) <ershov(a)virginia.edu> Dear Colleagues, The University of Virginia is advertising two positions: ================== The geometry and topology group at the University of Virginia is hiring *two NSF RTG research associates*. The appointments are one year long, renewable for a total of three years. The application deadline is November 15, 2020. Preference will be given to candidates within three years of completing their PhD. The search targets fields which complement the research interests of the *geometry and topology group* at UVa, which includes *geometric topology, algebraic topology, and geometric group theory.* Applicants must be US citizens, nationals, or permanent residents (per NSF rules). Research associates are expected to teach during the academic year, and to assist in the topology Research Experience for Undergraduates during at least one summer of their employment. For further specifics, including instructions for applying, please visit https://uva.wd1.myworkdayjobs.com/en-US/UVAJobs/job/Charlottesville-VA/Math…, and consult the ad on Mathjobs.org: https://www.mathjobs.org/jobs/list/16573 ======================= The department of mathematics at the University of Virginia is hiring *one Whyburn research associate and lecturer.* The appointment is one year long, renewable for a total of three years. The application deadline is November 15, 2020. Preference will be given to candidates within three years of completing their PhD. The search targets fields which complement the research interests of the department, with concentration in *mathematical physics, group theory, probability, and representation theory*. For further specifics, including instructions for applying, please visit https://uva.wd1.myworkdayjobs.com/en-US/UVAJobs/job/Charlottesville-VA/Math… , and consult the ad on Mathjobs.org: https://www.mathjobs.org/jobs/list/16573 ======================== Please feel free to forward this email to anyone who might be interested. Best regards, Sara -- Sara Maloni Department of Mathematics University of Virginia http://www.people.virginia.edu/~sm4cw/

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Seminario in presenza di geometria, mercoledì prossimo alle 11
by Bruno Martelli 11 Oct '20

11 Oct '20

Buondì, Mercoledì prossimo alle 11 si terrà un altro seminario di geometria in Aula Magna. Come sempre, chi vuole partecipare dovrà mandarmi la propria adesione entro le 17 del giorno precedente (se potete, meglio prima possibile). Il seminario verrà trasmesso in diretta e registrato in questo canale Teams: https://teams.microsoft.com/l/channel/19%3a540f44c5cea54ac09f8bb6d267f8cdaf… Nello stesso canale c'è la registrazione del seminario precedente, che rimarrà nella cartella File. Purtroppo per colpa mia nella registrazione manca il pezzo introduttivo iniziale, ma miracolosamente si riesce a seguire lo stesso. Seguono i dati del prossimo seminario. A presto, Bruno 14-Oct-2020 - 11:00 Cusps of Hyperbolic 4-Manifolds and Rational Homology Spheres <http://www.dm.unipi.it/webnew/it/seminari/cusps-hyperbolic-4-manifolds-and-…> Leonardo Ferrari By Margulis’ Lemma, a finite-volume complete hyperbolic n-manifold has a finite number of ends called cusps, each of which is diffeomorphic to the product of a flat (n-1)-manifold with the half-line. These flat manifolds are called cusp sections, and their possible configurations on hyperbolic manifolds is still very little understood. For instance, it was still not known if a hyperbolic manifold could have only rational homology spheres as cusp sections. In the 4-dimensional case, of the 10 flat 3-manifold diffeomorphism types, only the Hansche-Wendt manifold is a rational homology sphere, and it was conjectured if there existed an orientable hyperbolic 4-manifold such that all the cusps sections were such a manifold. We will introduce combinatorial tools to build manifolds by gluing copies of polytopes - a technique called colouring - and computational tools to tree-search for manifolds, thus providing an example that answers affirmatively this conjecture. Joint work with Leone Slavich and Sasha Kolpakov.

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Fwd: Position in differential geometry in Brussels
by Carlo Petronio 05 Oct '20

05 Oct '20

-------- Messaggio Inoltrato -------- Oggetto: Position in differential geometry in Brussels Data: Mon, 5 Oct 2020 14:28:41 +0200 Mittente: Mélanie Bertelson <melanie.bertelson(a)gmail.com> A: Fabio Podesta' <fabio.podesta(a)unifi.it>, Fiammetta Battaglia <fiammetta.battaglia(a)unifi.it>, Elisa Prato <elisa.prato(a)unifi.it>, antonella nannicini <antonella.nannicini(a)unifi.it>, luigi verdiani <luigi.verdiani(a)unifi.it>, Caterina Stoppato <caterina.stoppato(a)unifi.it>, Cinzia Bisi <bsicnz(a)unife.it>, Graziano Gentili <graziano.gentili(a)unifi.it>, Simone CALAMAI <simone.calamai(a)unifi.it>, Giorgio Patrizio <giorgio.patrizio(a)unifi.it>, Filippo Bracci <fbracci(a)mat.uniroma2.it>, Adriano Tomassini <adriano.tomassini(a)unipr.it>, Anna Fino <annamaria.fino(a)unito.it>, MUSSO EMILIO <emilio.musso(a)polito.it>, Barecka Agata <abarecka(a)gmail.com>, Szilard Agnes <szilard(a)renyi.hu>, Alberto Abbondandolo <alberto.abbondandolo(a)rub.de>, Ibort Alberto <albertoi(a)math.uc3m.es>, Tralle Aleksy <tralle(a)matman.uwm.edu.pl>, Portaluri Alessandro <alessandro.portaluri(a)gmail.com>, Mandini Alessia <amandini(a)math.ist.utl.pt>, Figalli Alessio <alessio.figalli(a)math.ethz.ch>, Oancea Alexandru <oancea(a)math.jussieu.fr>, Ritter Alex <Alexander.Ritter(a)maths.ox.ac.uk>, Alfonso Sorrentino <sorrentino(a)mat.uniroma2.it>, Jaume Amoros <jaume.amoros(a)upc.edu>, Cannas da Silva Ana <acannas(a)math.ist.utl.pt>, Eslami Rad Anahita <aeslamir(a)ulb.ac.be>, Lecuona Ana <ana.lecuona(a)univ-amu.fr>, Juhasz Andras <juhasza(a)maths.ox.ac.uk>, Nemethi Andras <nemethi(a)renyi.hu>, Stipsicz Andras <stipsicz(a)renyi.hu>, Szucs Andras <szucs(a)cs.elte.hu>, Loi Andrea <loi(a)unica.it>, Knauf Andreas <knauf(a)math.fau.de>, Kiesenhofer Anna <anna.kiesenhofer(a)gmx.at>, Szczepkowska Anna <anna.szczepkowska(a)matman.uwm.edu.pl>, Vaugon Anne <anne.vaugon(a)univ-nantes.fr>, Woike Artur <awoike(a)matman.uwm.edu.pl>, Papadopoulos Athanase <papadop(a)math.unistra.fr>, Baptiste Chantraine <baptiste.chantraine(a)univ-nantes.fr>, Ramos Vinicius Gripp Barros <vgbramos(a)impa.br>, Siebert Bernd <bernd.siebert(a)math.uni-hamburg.de>, Rink Bob <brink(a)few.vu.nl>, Kalmar Boldizsar <bkalmar(a)renyi.hu>, Van den Berg Jan Bouwe <janbouwe(a)few.vu.nl>, Faber Carel <faber(a)math.kth.se>, Alvarez Paiva Juan Carlos <Juan-Carlos.Alvarez-Paiva(a)math.univ-lille1.fr>, Tejero Carlos <carlost(a)usal.es>, Blanchet Christian <blanchet(a)math.jussieu.fr>, Kassel Christian <kassel(a)math.unistra.fr>, Wendl Chris <wendl(a)math.hu-berlin.de>, Viterbo Claude <cviterbo(a)yahoo.fr>, Gayet Damien <gayet(a)math.univ-lyon1.fr>, Zuddas Daniele <d.zuddas(a)gmail.com>, Milinkovic Darko <milinko(a)matf.bg.ac.rs>, Hermann David <hermann(a)math.jussieu.fr>, Torres David <martinez(a)math.ist.utl.pt>, Salamon Dietmar <dietmar.salamon(a)math.ethz.ch>, Joyce Dominic <dominic.joyce(a)lincoln.ox.ac.uk>, Zehnder Eduard <zehnder(a)math.ethz.ch>, Shelukhin Egor <egorshel(a)post.tau.ac.il>, Ferrand Emmanuel <ferrand(a)math.jussieu.fr>, Opshtein Emmanuel <opshtein(a)math.unistra.fr>, Szabo Endre <endre(a)renyi.hu>, van den Ban Erik <E.P.vandenBan(a)uu.nl>, Dias Esmeralda <edias(a)math.ist.utl.pt>, Eva Miranda <evamirandagalceran(a)gmail.com>, Legendre Eveline <eveline.legendre(a)math.univ-toulouse.fr>, Volkov Evgeny <evolkov(a)ulb.ac.be>, Fabian Ziltener <F.Ziltener(a)uu.nl>, Ngo Fabien <fabiengo(a)ulb.ac.be>, Pasquotto Federica <pasquott(a)few.vu.nl>, Felix Schlenk <felix.schlenk(a)unine.ch>, Schmaeschke Felix <schmascf(a)math.hu-berlin.de>, Schaetz Florian <fschaetz(a)math.ist.utl.pt>, Kirwan Frances <kirwan(a)maths.ox.ac.uk>, Presas Francisco <fpresas(a)icmat.es>, Cardin Franco <cardin(a)math.unipd.it>, Costantino Francois <Francesco.Costantino(a)math.univ-toulouse.fr>, Laudenbach Francois <laudenba(a)univ-nantes.fr>, Bourgeois Frederic <bourgeois(a)math.u-psud.fr>, Siburg Karl Friedrich <karl.f.siburg(a)math.uni-dortmund.de>, Zapolsky Frol <zfrol(a)univ.haifa.ac.il>, Etesi Gabor <etesi(a)math.bme.hu>, Benedetti Gabriele <gbenedetti(a)mathi.uni-heidelberg.de>, Paternain Gabriel <G.P.Paternain(a)dpmms.cam.ac.uk>, Dimitroglou Rizell Georgios <dimitroglou.georgios(a)gmail.com>, Pacienza Gianluca <pacienza(a)math.unistra.fr>, Bazzoni Giovanni <gbazzoni(a)gmail.com>, Granja Gustavo <ggranja(a)math.ist.utl.pt>, Massuyeau Gwenaebl <massuyea(a)math.unistra.fr>, Geiges Hansjoerg <geiges(a)math.uni-koeln.de>, Castejon Hector <Hector.Castejon(a)gmail.com>, Hanssmann Heinz <Heinz.Hanssmann(a)math.uu.nl>, Eynard-Bontemps Helene <heynardb(a)math.jussieu.fr>, Waalkens Holger <H.Waalkens(a)rug.nl>, Sols Ignacio <isols(a)mat.ucm.es>, Mundet Ignasi <ignasi.mundet(a)gmail.com>, Cruz Ineas <imcruz(a)fc.up.pt>, Smith Ivan <is200(a)cam.ac.uk>, Wisniewska Jagna <j.j.wisniewska(a)student.vu.nl>, Arboleda Jaime <jaime.arboleda.castilla(a)gmail.com>, Rasmussen Jake <J.Rasmussen(a)dpmms.cam.ac.uk>, Solomon Jake <jake(a)math.huji.ac.il>, Latschev Janko <janko.latschev(a)math.uni-hamburg.de>, Kedra Jarek <kedra(a)maths.abdn.ac.uk>, Barraud Jean-Francois <barraud(a)math.univ-toulouse.fr>, Gutt Jean <guttjean(a)gmail.com>, Marco Jean-Pierre <marco.jeanpierre(a)gmail.com>, Katic Jelena <jelenak(a)matf.bg.ac.rs>, Gonzalo Jesus <jesus.gonzalo(a)uam.es>, Weber Joachim <joa(a)math.sunysb.edu>, Nunes da Costa Joana <jmcosta(a)mat.uc.pt>, Fine Joel <joel.fine(a)ulb.ac.be>, Woolf Jonathan <Jonathan.Woolf(a)liverpool.ac.uk>, Nelson Jo <nelson(a)math.columbia.edu>, Evans Jonny <j.d.evans(a)ucl.ac.uk>, Agapito Jose <jagruiz(a)cii.fc.ul.pt>, Pook Julian <julipook(a)ulb.ac.be>, Kang Jungsoo <jungsoo.kang(a)me.com>, Cieliebak Kai <kai.cieliebak(a)math.uni-augsburg.de>, Zehmisch Kai <Kai.Zehmisch(a)math.uni-giessen.de>, Mohnke Klaus <mohnke(a)math.hu-berlin.de>, Klaus Niederkrüger <niederkr(a)math.univ-toulouse.fr>, Efstathiou Konstantinos <konstantinos(a)efstathiou.gr>, Feher Laszlo <lfeher63(a)gmail.com>, La Fuente Gravy Laurent <Laurent.La.Fuente.Gravy(a)ulb.ac.be>, Lazzarini Laurent <Laurent.Lazzarini(a)math.jussieu.fr>, Polterovich Leonid <polterov(a)runbox.com>, Godinho Leonor <lgodin(a)math.ist.utl.pt>, Lev Buhovski <levbuh(a)post.tau.ac.il>, Jacobsson Magnus <magnus.jacobsson(a)math.uu.se>, Chaperon Marc <chaperon(a)math.jussieu.fr>, Alves Marcelo <marcelorralves(a)gmail.com>, Izydorek Marek <izydorek(a)mif.pg.gda.pl>, Crainic Marius <m.crainic(a)uu.nl>, Berti Massimiliano <berti(a)sissa.it>, Schwarz Matthias <Matthias.Schwarz(a)math.uni-leipzig.de>, Bertelson Melanie <mbertels(a)ulb.ac.be>, Bialy Michael <bialy(a)math.tau.ac.il>, Brandenbursky Michael <mbrandenbursky(a)yahoo.com>, Entov Michael <michael.entov(a)gmail.com>, Hutchins Michael <hutching(a)math.berkeley.edu>, Khanevsky Michael <khanev(a)post.tau.ac.il>, Audin Michelle <maudin(a)math.unistra.fr>, Abreu Miguel <mabreu(a)math.ist.utl.pt>, Mihai Damian <damian(a)math.unistra.fr>, Salam Murat <saglam(a)mis.mpg.de>, Zena'efdi Na'efm <nzenaidi(a)ulb.ac.be>, Hitchin Nigel <hitchin(a)maths.ox.ac.uk>, Bernardi Olga <obern(a)math.unipd.it>, Fabert Oliver <o.fabert(a)vu.nl>, Brahic Olivier <brahic(a)math.ist.utl.pt>, Yaron Ostrover <ostrover(a)gmail.com>, Suarez-Serrato Pablo <p.suarez-serrato(a)mpim-bonn.mpg.de>, Paolo Ghiggini <paolo.ghiggini(a)univ-nantes.fr>, Bernard Patrick <patrick.bernard(a)ceremade.dauphine.fr>, Patrick Massot <patrick.massot(a)math.u-psud.fr>, Biran Paul <paul.biran(a)math.ethz.ch>, Salomao Pedro <psalomao(a)gmail.com>, Wilson Pelham <P.M.H.Wilson(a)dpmms.cam.ac.uk>, Peter Albers <palbers(a)mathi.uni-heidelberg.de>, Pushkar Petya <ppushkar(a)ulb.ac.be>, Hans-Bert Rademacher <Hans-Bert.Rademacher(a)math.uni-leipzig.de>, Wullschleger Raphael <raphael.wullschleger(a)unine.ch>, Caseiro Raquel <raquel(a)mat.uc.pt>, Janner Remi <remi.janner(a)math.ethz.ch>, Rémi Leclercq <remi.leclercq(a)math.u-psud.fr>, Piergallini Riccardo <riccardo.piergallini(a)unicam.it>, Thomas Richard <richard.thomas(a)imperial.ac.uk>, Szoke Robert <rszoke(a)cs.elte.hu>, Vandervorst Robert <vdvorst(a)few.vu.nl>, Casals Roger <casals.roger(a)gmail.com>, Barbieri Solha Romero <romerosolha(a)gmail.com>, Sena Dias Rosa <rdurao(a)math.ist.utl.pt>, Loja Fernandes Rui <rfern(a)math.ist.utl.pt>, Rubinsztein Ryszard <ryszard(a)math.uu.se>, Kim Sang Seon <sskim(a)math.ist.utl.pt>, Lanzat Sergei <lanzat.sergei(a)gmail.com>, Sheila Sandon <sandon(a)math.unistra.fr>, Anjos Silvia <sanjos(a)math.ist.utl.pt>, Sabatini Silvia <sabatini(a)math.uni-koeln.de>, Donaldson Simon <s.donaldson(a)imperial.ac.uk>, Matveyev Slava <Slava.Matveyev(a)math.uni-leipzig.de>, Sobhan Seyfaddini <sobhan.sey(a)gmail.com>, Hohloch Sonja <sonja.hohloch(a)uantwerpen.be>, Friedl Stefan <sfriedl(a)gmail.com>, Nemirovski Stefan <stefan(a)mi.ras.ru>, Stefan Suhr <suhr100(a)gmail.com>, Mescher Stephan <mescher(a)math.uni-leipzig.de>, Gal Swiatoslaw <Swiatoslaw.Gal(a)math.uni.wroc.pl>, Szabo Szilard <szabosz(a)renyi.hu>, Szamuely Tamas <szamuely(a)renyi.hu>, Terpai Tamas <terpai(a)renyi.hu>, Delzant Thomas <delzant(a)math.unistra.fr>, Fiedler Thomas <fiedler(a)picard.ups-tlse.fr>, Huber Thomas <thomas.huber(a)math.ethz.ch>, Rot Thomas <thomas.rot(a)gmail.com>, Vogel Thomas <tvogel(a)mpim-bonn.mpg.de>, Ekholm Tobias <tobias(a)math.uu.se>, Coates Tom <t.coates(a)imperial.ac.uk>, Umberto Hryniewicz <umbertolh(a)gmail.com>, Frauenfelder Urs <Urs.Frauenfelder(a)math.uni-augsburg.de>, Georgoulas Valentina <valentina.georgoulas(a)math.ethz.ch>, Kharlamov Viatcheslav <kharlam(a)math.unistra.fr>, Munoz Vicente <vicente.munoz(a)mat.ucm.es>, Blanloeil Vincent <blanloei(a)math.unistra.fr>, Colin Vincent <vincent.colin(a)math.univ-nantes.fr>, Vincent Humiliere <humi(a)math.jussieu.fr>, Fock Vladimir <fock(a)math.unistra.fr>, Matveev Vladimir <vladimir.s.matveev(a)googlemail.com>, Turaev Vladimir <turaev(a)math.unistra.fr>, Shevchishin Vsevolod <sewa(a)minet.uni-jena.de>, San Vu Ngoc <san.vu-ngoc(a)univ-rennes1.fr>, Will Merry <merry(a)math.ethz.ch>, Domitrz Wojciech <domitrz(a)mini.pw.edu.pl>, Rollin Yann <yann.rollin(a)univ-nantes.fr>, Stepien Zofia <stepien(a)ps.pl>, Klaus Niederkrüger <niederkruger(a)math.univ-lyon1.fr>, Albert Fathi <afathi30(a)gatech.edu>, Dan Cristofaro-Gardiner <dcristof(a)ucsc.edu>, Daniel Pomerleano <Daniel.Pomerleano(a)umb.edu>, Kei Irie <iriek(a)ms.u-tokyo.ac.jp>, Leonardo Macarini <macarini(a)math.tecnico.ulisboa.pt>, Marco Abate <marco.abate(a)unipi.it>, CARLO PETRONIO <carlo.petronio(a)unipi.it>, ROBERTO FRIGERIO <roberto.frigerio(a)unipi.it>, RICCARDO BENEDETTI <riccardo.benedetti(a)unipi.it>, BRUNO MARTELLI <bruno.martelli(a)unipi.it>, francavi <francavi(a)dm.unibo.it>, Andrea Sambusetti <sambuset(a)mat.uniroma1.it> Dear Colleagues, The department of Mathematics at the /Université libre de Bruxelles /is opening a tenure-track type position in Differential Geometry, starting October 2021. The deadline to send applications is December 1st, 2020. The detailed description of the position can be found in the attached file or at the address: https://www2.ulb.ac.be/ulb/vacances/academiques/index-7.html Please forward to anyone who might be interested. Best regards, Mélanie Bertelson

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Link a seminario
by Bruno Martelli 30 Sep '20

30 Sep '20

Buondì, Proviamo a trasmettere e registrare il seminario di geometria di oggi delle 11 (cioè fra pochi minuti). Sarà trasmesso e registrato su Teams. Il link è questo: https://teams.microsoft.com/l/channel/19%3a540f44c5cea54ac09f8bb6d267f8cdaf… A presto, Bruno

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Re: [Geometria_pisa] Seminario mercoledì prossimo/registrazione
by Bruno Martelli 29 Sep '20

29 Sep '20

Caro Riccardo, Ci proviamo. Essendo un seminario informale secondo me è meglio usare la lavagna e Emanuele Paolini mi ha detto che esistono dei modi di riprendere le varie lavagne (e ci sono le istruzioni per farlo). Forse eviterei di registrare e di mettere su un canale pubblico aperto a chiunque, sempre per il carattere informale della cosa. Se ci riuscisse, si potrebbe mettere su Microsoft Stream riservato a unipi. Mercoledì mattina vado prima a vedere cosa riesco a fare, chiunque abbia dimestichezza e vuole dare una mano mi faccia sapere. E' comunque uno sforzo utile anche per i seminari successivi. Ciao, Bruno On Sat, Sep 26, 2020 at 12:05 PM RICCARDO BENEDETTI < riccardo.benedetti(a)unipi.it> wrote: > Caro Bruno, > > per motivi miei, non saro' presente a questa iniziativa 'in presenza', > che peraltro apprezzo. > Mi chiedevo se non fosse possibile registrare questi seminari alla > lavagna e renderli > disponibili in streaming e/o in differita su qualche canale (YouTube ? > ....). > Del resto l'aula magna dovrebbe essere gia' predisposta allo scopo. > Questo non dovrebbe > annacquare la valenza simbolica di questa ripartenza in presenza, del > resto i tempi sono quello che sono, > come dice la (bella) pubblicita' della coca-cola, puo' darsi che il > 'come prima' muti stabilmente nel > 'come mai prima' .... > > Ciao > > Riccardo > > > > --- > Riccardo Benedetti > > Il 25.09.2020 14:52 Bruno Martelli ha scritto: > > Buongiorno,Un aggiornamento sul seminario di mercoledì prossimo (che > > vale anche per i successivi). > > In Aula Magna ci sono 25 posti. Chi vuole partecipare è tenuto a > > comunicarmelo entro le ore 17 del giorno precedente. Io assegnerò i > > posti a sedere ai primi 24 che mi scrivono. Pregherei quindi anche chi > > mi ha già scritto di confermare la sua volontà di venire al > > seminario. > > Se non siete totalmente sicuri potete iscrivervi e poi eventualmente > > cancellarvi. > > A presto, > > Bruno > > > > On Thu, Sep 24, 2020 at 7:39 PM Bruno Martelli <martelli(a)dm.unipi.it> > > wrote: > > > >> Buondì, > >> > >> Sto organizzando alcuni seminari di geometria (soprattutto geometria > >> iperbolica), in presenza (!), tenuti da nostri dottorandi e > >> studenti. Saranno il mercoledì mattina alle 11, in Aula Magna (non > >> tutti i mercoledì). L'aula contiene circa 25 posti (non ricordo il > >> numero esatto). > >> > >> Lo scopo principale è permettere ai dottorandi di discutere della > >> loro ricerca e di progetti futuri: sarà quindi qualcosa di più > >> informale del solito (spero) e forse anche più specialistico - > >> qualcosa di rilassato a metà tra i seminari usuali e un gruppo di > >> lavoro. > >> > >> I seminari sono ovviamente aperti a chiunque, purché si seguano > >> tutte le solite regole ben note (mascherina, distanziamento sociale, > >> iscrizione all'ingresso del dipartimento, non usare mai il termine > >> "piuttosto che" in forma disgiuntiva). > >> > >> Questo il primo seminario: > >> > >> 30-Sep-2020 - 11:00 > >> > >> A Hyperbolic 4-manifold with a perfect circle-valued Morse function > >> [1] > >> > >> Ludovico Battista > >> Aula Magna > >> > >> In dimension 3, combining the study of the geometry and the topology > >> of manifolds led to interesting and surprising results. The > >> generalization of such a link in dimension 4 seems to be a promising > >> approach to better understand this complicated world. > >> > >> An intriguing 3-dimensional phenomenon is the existence of > >> hyperbolic manifolds which fiber over the circle. Such manifolds > >> cannot exist in dimension four, due to a constraint given by Euler > >> Characteristic and the Gauss - Bonnet formula. We will introduce the > >> notion of "perfect circle-valued Morse function", which appears to > >> be the natural generalization of "fibration over S^1", and we will > >> show the existence of a finite-volume cusped hyperbolic 4-manifold > >> which admits such a function. To do this we will elaborate on a > >> recent paper of Jankiewicz - Norin - Wise that makes use of Bestvina > >> - Brady theory. > >> Joint work with Bruno Martelli. > > > > > > Links: > > ------ > > [1] > > > http://www.dm.unipi.it/webnew/it/seminari/hyperbolic-4-manifold-perfect-cir… > > _______________________________________________ > > Geometria_Pisa mailing list > > Geometria_Pisa(a)fields.dm.unipi.it > > https://fields.dm.unipi.it/listinfo/geometria_pisa >

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Seminario mercoledì prossimo
by Bruno Martelli 26 Sep '20

26 Sep '20

Buondì, Sto organizzando alcuni seminari di geometria (soprattutto geometria iperbolica), in presenza (!), tenuti da nostri dottorandi e studenti. Saranno il mercoledì mattina alle 11, in Aula Magna (non tutti i mercoledì). L'aula contiene circa 25 posti (non ricordo il numero esatto). Lo scopo principale è permettere ai dottorandi di discutere della loro ricerca e di progetti futuri: sarà quindi qualcosa di più informale del solito (spero) e forse anche più specialistico - qualcosa di rilassato a metà tra i seminari usuali e un gruppo di lavoro. I seminari sono ovviamente aperti a chiunque, purché si seguano tutte le solite regole ben note (mascherina, distanziamento sociale, iscrizione all'ingresso del dipartimento, non usare mai il termine "piuttosto che" in forma disgiuntiva). Questo il primo seminario: 30-Sep-2020 - 11:00 A Hyperbolic 4-manifold with a perfect circle-valued Morse function <http://www.dm.unipi.it/webnew/it/seminari/hyperbolic-4-manifold-perfect-cir…> Ludovico Battista Aula Magna In dimension 3, combining the study of the geometry and the topology of manifolds led to interesting and surprising results. The generalization of such a link in dimension 4 seems to be a promising approach to better understand this complicated world. An intriguing 3-dimensional phenomenon is the existence of hyperbolic manifolds which fiber over the circle. Such manifolds cannot exist in dimension four, due to a constraint given by Euler Characteristic and the Gauss - Bonnet formula. We will introduce the notion of "perfect circle-valued Morse function", which appears to be the natural generalization of "fibration over S^1", and we will show the existence of a finite-volume cusped hyperbolic 4-manifold which admits such a function. To do this we will elaborate on a recent paper of Jankiewicz - Norin - Wise that makes use of Bestvina - Brady theory. Joint work with Bruno Martelli.

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Virtual workshop: simplicial volumes and bounded cohomology
by Marco Moraschini 18 Sep '20

18 Sep '20

Cari tutti, vi segnalo che settimana prossima (21-25.09) si terrà online il workshop "Simplicial volumes and bounded cohomology": https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/ind… Per chi fosse interessato solamente ad alcuni talk, ricordo che non è necessaria alcuna registrazione. Sarà infatti sufficiente connettersi al link zoom che verrà indicato nei prossimi giorni sulla pagina web. Per chi invece volesse registrarsi all'evento, ricordo che può farlo inviando una mail a simvol2020(a)sfb-higher-invariants.de. Saluti, Marco Moraschini

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Bando assegno di ricerca
by Bruno Martelli 07 Sep '20

07 Sep '20

Buondì, Inoltro avviso per assegno di ricerca a Roma in algebra e geometria, con preghiera di diffusione. Bruno ---- Vi informo che è stato pubblicato sul sito web di Ateneo il seguente bando per assegno di ricerca: https://web.uniroma1.it/trasparenza/dettaglio_bando_albo/164344 [1] n. 4/2020 per il conferimento di n. 1 assegno annuale categoria B tip. II SSD: MAT/02 e MAT/03 scadenza: 4 ottobre 2020 Responsabile scientifico: prof. Alberto de Sole

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annuncio di seminario - lunedì 7 settembre ore 15
by PAOLO LISCA 06 Sep '20

06 Sep '20

--------------- Data e ora: lunedì 7 settembre 2020, ore 15 Speaker: Stefano Riolo Titolo: On the topology of hyperbolic 4-manifolds Abstract: The study of hyperbolic manifolds is a reach and active research field for several mathematicians with various backgrounds. By the celebrated Geometrization, the study of 3-manifolds essentially reduces to the study of hyperbolic 3-manifolds. This is not true in higher dimension, where the situation is much less clear. The talk will consist of an overview of some recent discoveries on the topology of hyperbolic 4-manifolds of finite volume (including joint works with A. Kolpakov, B. Martelli, L. Slavich, and S. Tschantz). -------------------- Il seminario avrà luogo nella sala virtuale: https://teams.microsoft.com/l/meetup-join/19%3ameeting_YjEyNDgyZDUtMDE5Yi00…

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