Geometria_Pisa

geometria_pisa@lists.dm.unipi.it

1 participants
770 discussions

seminario domani mattina!
by Bruno Martelli 16 Mar '16

16 Mar '16

Buondì, Riprenderemo domani mattina con i seminari settimanali di geometria, con un orario nuovo: giovedì alle 11.00. Seguono i dati sul seminario di domani. Mi scuso per lo scarso preavviso, A presto, Bruno Giovedì 17 marzo, ore 11.00 Aula seminari Speaker: Roberto Frigerio Titolo: Discrete approximations of Gromov's simplicial volume. Abstract: The simplicial volume is a homotopy invariant of closed manifolds defined by Gromov in 1982. For a manifold M, it is bounded from above by the minimal number of top-dimensional simplices in a triangulation of M, and roughly speaking it measures the minimal size of triangulations of M "with real coefficients". A long-standing conjecture by Gromov asserts that, for aspherical manifolds, the vanishing of the simplicial volume implies the vanishing of the Euler characteristis. In this talk I describe an approach to this conjecture that makes use of discrete approximations of the simplicial volume in towers of coverings.

2 1

Seminari dei Baby-Geometri
by Nicoletta Tardini 10 Mar '16

10 Mar '16

Cari tutti, Martedì 15 Marzo alle 14:30 presso la Sala Seminari del DM di Pisa si terrà il Seminario dei Baby-Geometri di Daniele Angella (Università di Firenze) dal titolo: "Algebraic number field theory for constructing non-Kähler manifolds" di cui riporto l'abstract: "We review the construction by Karl Oeljeklaus and Matei Toma of some compact complex non-Kähler manifolds associated to number fields, and their properties. References: - K. Oeljeklaus, M. Toma, Non-Kähler compact complex manifolds associated to number fields, Ann. Inst. Fourier (Grenoble) 55 (2005), no. 1, 161171. - L. Ornea, V. Vuletescu, Oeljeklaus-Toma manifolds and locally conformally Kähler metrics. A state of the art, Stud. Univ. Babeş-Bolyai Math. 58 (2013), no. 4, 459468." Tutti gli interessati sono invitati a partecipare. Per saperne di più sui prossimi seminari scrivete ad uno degli organizzatori o consultate le pagine: http://blog.phc.unipi.it/babygeometri/ http://gecogedi.dimai.unifi.it/seminars/ Mailing-list: babygeom(a)poisson.phc.unipi.it Saluti, Nicoletta Tardini e Carlo Collari

1 0

Seminari dei Baby Geometri
by Nicoletta Tardini 03 Mar '16

03 Mar '16

Cari tutti, Martedì 8 Marzo alle 14:30 presso la Sala Seminari del DM di Pisa si terrà il Seminario dei Baby-Geometri di Daniele Celoria (Università di Firenze) dal titolo: "Concordanze e HFK" di cui riporto l'abstract: "In questo seminario, definiremo il gruppo delle concordanze di nodi in S^3, mostrando alcune delle sue proprietà. Infine, introdurremo la knot Floer homology (HFK), e vedremo come estrarre da questa alcuni invarianti di concordanza." Tutti gli interessati sono invitati a partecipare. Per saperne di più sui prossimi seminari scrivete ad uno degli organizzatori o consultate le pagine: http://blog.phc.unipi.it/babygeometri/ http://gecogedi.dimai.unifi.it/seminars/ Mailing-list: babygeom(a)poisson.phc.unipi.it Saluti, Nicoletta Tardini e Carlo Collari

1 0

Seminari dei Baby Geometri
by tardini＠student.dm.unipi.it 25 Feb '16

25 Feb '16

Cari tutti, Martedì 1 Marzo alle 14:30 presso l'aula seminari del DM riprendono i seminari dei Baby Geometri. Lo speaker sarà Kirill Kuzmin (Università di Pisa) e terrà un seminario dal titolo: "Relativa Iperbolicità e Rigidità Quasi Isometrica" di cui riporto l'abstract: In questo seminario esploreremo alcune proprietà di gruppi e di varietà invarianti per quasi isometria. Tratteremo in particolare oggetti che si possono costruire a partire da oggetti più semplici e ci concentreremo su quelli che possiedono la proprietà di ``Relativa iperbolicità'' che generalizza l'idea di iperbolicità di Gromov, che esprime una condizione di curvatura negativa su larga scala, a contesti dove tale proprietà di curvatura non è più valida. Tutti siete invitati a partecipare. A seguire: 08 Marzo, Daniele Celoria 15 Marzo, Daniele Angella 22 Marzo, Chinh Lu 05 Aprile, Luigi Caputi 07 Aprile, Maurizio Parton Per saperne di più sui prossimi seminari scrivete ad uno degli organizzatori o consultate la pagina: http://gecogedi.dimai.unifi.it/seminars/ Mailing-list: babygeom(a)poisson.phc.unipi.it Saluti, Nicoletta Tardini e Carlo Collari

1 0

seminari mercoledi e giovedi
by Bruno Martelli 23 Feb '16

23 Feb '16

buondì, vi segnalo due seminari di geometria che si terranno nei prossimi due giorni, entrambi alle 15 (ma in aule diverse!). a presto, Bruno ----- 24-Feb-2016 - 15:00 Masahiro Shiota (Nagoya University) O-minimal Hauptvermutung and manifolds, I Sala Riunioni (Dip. Matematica) 25-Feb-2016 - 15:00 Masahiro Shiota (Nagoya University) O-minimal Hauptvermutung and manifolds, II Sala Seminari (Dip. Matematica) -----

1 0

Seminario oggi
by Bruno Martelli 17 Feb '16

17 Feb '16

Buondi, con colpevole ritardo vi ricordo il seminario di geometria di oggi, in aula seminari alle 15. Bruno Speaker: Leone Slavich Titolo: Varietà tetraedrali geometricamente bordanti Abstract: Introdurremo una costruzione che permette di realizzare alcune 3-varietà iperboliche tassellate da tetraedri ideali regolari come ipersuperfici geodetiche in una 4-varietà iperbolica. Come applicazione, mostreremo che il complementare del nodo figura 8 è realizzabile come bordo totalmente geodetico di una 4-varietà iperbolica. La costruzione è di natura essenzialmente combinatoria, e sfrutta le proprietà di un politopo di Coxeter iperbolico di dimensione 4: la 5-cella rettificata.

1 0

Workshop "Special Hermitian metrics on non-Kahler manifolds" announcement
by Simone Calamai 16 Feb '16

16 Feb '16

http://gecogedi.dimai.unifi.it/event/225/ Date: Monday, April 20, 2016 -- Tuesday, April 22, 2016 Place: Mathematics Department, Florence, Italy ######################## FIRST ANNOUNCEMENT ###################### "Special Hermitian metrics on non-Kahler manifolds" Aim of the workshop is to present the state-of-the-art on non-Kähler special metrics, which has been developing much interest and importance in the recent years, as well as to point out which open problems could be particuarly worth of further developement. The 3-days workshop consists of a 3-hours mini-course by Ben Weinkove on "The complex Monge-Ampère equation on non-Kähler manifolds", by seven 1-hour talks by distinguished international researchers, and by two 30-minutes talks by young PhD students, on Hermitian geometry of complex non-Kähler manifolds. The list of invited speakers includes: - Vestislav Apostolov (Université du Québec à Montréal) - Anna Fino (Università di Torino) - Mike Lock (The University of Texas at Austin) - Andrei Moroianu (Université de Versailles–St Quentin) - Liviu Ornea (University of Bucharest) - Alexandra Otiman (University of Bucharest) - Massimiliano Pontecorvo (Università di Roma 3) - Miron Stanciu (University of Bucharest) - Nicoletta Tardini (Università di Pisa) - Ben Weinkove (Northwestern University) For further informations and for registration (deadline: March 31), please visit the webpage: http://nonkahlermetrics2016.dimai.unifi.it/. The event is supported by: SIR2014 "Analytic aspects in complex and hypercomplex geometry", and GNSAGA of INdAM. Please, feel free to contact the organizers: - Daniele Angella (daniele.angella(a)unifi.it) - Simone Calamai (scalamai(a)math.unifi.it) - Cristiano Spotti (c.spotti(a)dpmms.cam.ac.uk) #########################################################################

1 0

Fwd: Vacancy ID 122188: Postdoctoral Research Assistant in Low-Dimensional Topology (fwd)
by Roberto Frigerio 10 Feb '16

10 Feb '16

Ricevo e inoltro, Roberto http://www.maths.ox.ac.uk/node/15923 We invite applications for a postdoctoral research position, funded by the European Research Council, to work with Professor Andras Juhasz, at the Mathematical Institute, University of Oxford. This is a 36 month fixed-term position and is available from 1 September 2016 (or as soon as possible thereafter). The successful candidate will work on research projects related to the grant “Low-dimensional topology in Oxford,” in particular, apply Heegaard Floer homology or similar invariants to smooth 4-manifold topology and knot concordance, but there is scope for carrying out an independent research agenda. There is also a requirement to teach up to four sets of undergraduate or graduate classes per year, determined by the demand for classes in specific areas. Applicants should have a PhD awarded or submitted (at the time of taking up the position) in mathematics or a related discipline, and be able to demonstrate a strong background in gauge-theoretic techniques in low-dimensional topology, preferably Heegaard Floer homology, and a research focus on 4-dimensional applications. A good publication record judged by the stage of his/her career, and the ability to work together with others as part of a research team are also essential. Please direct informal enquiries to the Administrative Assistant (email: vacancies(a)maths.ox.ac.uk), quoting vacancy reference 122188. Applicants should read the job description before writing their application. You will be required to upload a letter setting out how you meet the selection criteria, a curriculum vitae including full list of publications, a statement of research interests and the contact details of three referees as part of your online application. (NOTE: Applicants are responsible for contacting their referees and making sure that their letters are received by the closing date). Applications for this vacancy are to be made online. To apply for this post and for further details, including the job description and selection criteria, please click on the link below https://www.recruit.ox.ac.uk/pls/hrisliverecruit/erq_jobspec_version_4.jobs… Only applications received before 12:00 noon UK time on Monday 14th March 2016 can be considered. Committed to equality and valuing diversity. Miss Nims Damney Administrative Assistant Mathematical Institute, Andrew Wiles Building Radcliffe Observatory Quarter, Woodstock Road Oxford, OX2 6GG Tel: 01865 (2) 73518

1 0

seminario domani
by Bruno Martelli 09 Feb '16

09 Feb '16

buondì, vi annuncio il seminario di geometria di domani. a presto, Bruno ---- 10-Feb-2016 - 15:00 Sala Seminari (Dip. Matematica) Concordanze di nodi in 3-varieta' Daniele Celoria (Università di Firenze) Sfruttando un'azione del gruppo di concordanze in S^3, definiamo la nozione di concordanza debole di nodi in 3-varieta'. Spiegheremo poi come distinguere classi di concordanza debole nel caso degli spazi lenticolari

1 0

convegno ICTP Trieste 2016
by Bruno Martelli 05 Feb '16

05 Feb '16

Dear Colleagues, This is the first announcement for an Advanced School and Workshop on Geometric Group Theory and Low-Dimensional Topology: Recent Connections and Advances to be held at ICTP Trieste, May 23d--June 6th 2016. The Advanced School (May 23-- May 27) is aimed at graduate students and will consist of 5 lecturers giving 3 talks each. There will be afternoon breakout groups with participants working on problems. The workshop will be held May 30 -- June 6th. Advanced School Speakers: Jeff Brock (Brown University) Josh Greene (Boston College) Pascal Hubert (Univ. Aix-Marseille) Fanny Kassel (Univ. Lille 1) Michah Sageev (Technion) Workshop Speakers include: Ian Agol (*) (U.C. Berkeley) Steve Boyer (UQAM) Ken Bromberg (Utah) Jeff Danciger (U.T. Austin) Moon Duchin (Tufts University) Alex Eskin (Chicago) Vincent Guiradel (Rennes 1) Peter Haissinsky (Univ. Paul Sabatier, Toulouse) Ursula Hamenstadt (Bonn) Francois Labourie (Univ. Nice-Sophia Antipolis) Jason Manning (Cornell) Vlad Markovic (Cal Tech) Gabriele Mondello (Univ. Rome, Sapienza) Luisa Paoluzzi (Univ. Aix-Marseille) Maria Pozzetti (Warwick) Andres Sambarino (Paris) Jean-Marc Schlenker (Luxembourg) Alessandro Sisto (ETH Zurich) Corinna Ulcigrai (Bristol) Anna Wienhard (*) (Heidelberg) Tengren Zhang (Cal Tech) (*) indicates to be confirmed. Further information, and an online application form will be available shortly at the website: http://indico.ictp.it/event/7646/ The organizers: Michel Boileau Dick Canary Bruno Martelli Maryam Mirzakhani Alan Reid

1 1

← Newer
1
...
47
48
49
50
51
52
53
...
77
Older →

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

Geometria_Pisa