April 2016 - Geometria_Pisa - Mailing list — Dipartimento di Matematica, UniPI

Seminari dei Baby-Geometri
by collari＠mail.dm.unipi.it 29 Apr '16

29 Apr '16

Cari tutti, Martedì 03 Maggio alle 14:30 presso la Sala Seminari del DM di Pisa si terrà il Seminario dei Baby-Geometri di Sabine Braun (KIT) dal titolo: "An Introduction to Simplicial Volume" di cui riporto l'abstract: "The simplicial volume is a homotopy invariant of closed manifolds - defined in terms of the singular chain complex - which measures the efficiency of representing the fundamental class by singular chains. So it gives an indication of how difficult it is to triangulate the manifold in question. It was first introduced by Gromov in the early 1980's in his proof of Mostow rigidity. Despite being a topological invariant the simplicial volume of a Riemannian manifold encodes interesting information about the Riemannian volume. Next to the geometric approach simplicial volume admits a description in terms of algebraic tools via bounded cohomology. This talk is meant to be an introduction to simplicial volume. We will give the basic definitions and derive a number of elementary properties. We will state some interesting results in this subject, trying to explain why simplicial volume is useful in the investigation of the relationship between topology and geometry of manifolds." 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

seminario domani
by Bruno Martelli 27 Apr '16

27 Apr '16

buondì, allego le informazioni sul seminario di domani mattina, cui siete tutti invitati. a presto, Bruno ------ 28-Apr-2016 - 11:00 Sala Seminari (Dip. Matematica) <http://www.dm.unipi.it/webnew/it/aula/sala-seminari-dip-matematica> The asymptotic of the number of simple closed geodesics on a hyperbolic surface according to M. Mirzakhani <http://www.dm.unipi.it/webnew/it/seminari/asymptotic-number-simple-closed-g…> Matthieu Gendulphe (Università di Pisa) Maryam Mirzakhani received the Fields medal for "her outstanding contributions to the dynamics and geometry of Riemann surfaces and their moduli spaces." We will describe one of her most famous results, which illustrates the sentence above. This talk is intended for non-experts.

1 0

seminario domani mattina
by Bruno Martelli 20 Apr '16

20 Apr '16

buondì, con il solito imperdonabile ritardo vi mando le informazioni sul seminario di geometria di domani mattina. Siete tutti invitati, a presto, Bruno Martelli ---- 21-Apr-2016 - 11:00 Sala Seminari (Dip. Matematica) <http://www.dm.unipi.it/webnew/it/aula/sala-seminari-dip-matematica> Minimal entropy for symmetric spaces <http://www.dm.unipi.it/webnew/it/seminari/minimal-entropy-symmetric-spaces> Louis Merlin (EPF Lausanne) Abstract: The volume growth entropy is the exponential growth rate of volume of balls in a Riemannian manifold. A conjecture of Gromov and Katok in the early 80's states that the only knowledge of the entropy gives important informations about the ambient geometry, for instance in the case of locally symmetric spaces. Precisely it states that the volume entropy is (uniquely) minimized (among all metrics of prescribed volume) at the symmetric metric. This is the so-called minimal entropy problem. I'll give an overview of what is known for this problem as well as surprising consequences regarding the Gromov's minimal volume or degree theory. I'll give a full proof of the case of product of hyperbolic planes (2015) and, if time permits, a glimpse for the case of Siegel upper half plane (work in progress).

1 0

Seminari dei Baby-Geometri
by Nicoletta Tardini 20 Apr '16

20 Apr '16

Cari tutti, Giovedì 28 Aprile alle 14:30 presso la Sala Seminari del DM di Pisa si terrà il Seminario dei Baby-Geometri di Samuele Lancini (Scuola Normale Superiore di Pisa) dal titolo: "From cusps to asymptotically hyperbolic ends" di cui riporto l'abstract: "It is well known but not well shown how to replace a cusp of an hyperbolic riemann surface with an asymptotically hyperbolic end. We will see a simple proof of this fact using analytical and geometrical tools, without going into detail but keeping a mere exposure. As a corollary we'll be able to glue two hyperbolic riemann surfaces with cusps obtaining a compact hyperbolic surface whose metric is 'arbitrarily close' to the two starting metrics. It's enough to know the basic definitions of riemann surface and hyperbolic metric in order to understand this talk. The knowledge of weighted Holder spaces is not required but may help too." 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 14 Apr '16

14 Apr '16

Cari tutti, Martedì 19 Aprile alle 14:30 presso la Sala Seminari del DM di Pisa si terrà il Seminario dei Baby-Geometri di Stefano Riolo (Università di Pisa) dal titolo: "Cone-deformations and hyperbolic surgeries" di cui riporto l'abstract: "Modest overview of the theory of cone-deformations. We will see its importance in three-dimensional hyperbolic geometry (and therefore in three-dimensional topology): for example in Thurston's celebrated Hyperbolic Dehn Filling Theorem. The seminar is addressed to non-experts, focusing on geometric intuition and skipping technicalities as much as possible. However, familiarity with hyperbolic geometry and geometric structures (in the sense of Ehresmann-Thurston) would help much." 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 13 Apr '16

13 Apr '16

Cari tutti, sfortunatamente per problemi personali del relatore, il seminario dei Baby-Geometri di domani è stato annulato. Ci scusiamo per il poco preavviso. Il prossimo appuntamento sarà il 19 Aprile con Stefano Riolo che parlerà di "Cone-deformations and hyperbolic surgeries". Gli organizzatori, Carlo e Nicoletta

1 0

Borse per visite scientifiche in Corea
by Daniele Zuddas 12 Apr '16

12 Apr '16

Sono attive alcune borse per brevi visite scientifiche in Corea del Sud destinate a giovani ricercatori. Il link per il bando è il seguente: http://www.ambseoul.esteri.it/ambasciata_seoul/it/ambasciata/news/dall-amba… Girate pure il messaggio ad ogni potenziale interessato. Saluti, Daniele Zuddas

1 0

"Special Hermitian metrics on non-Kähler manifolds", Firenze, April 20-22
by daniele.angella＠gmail.com 11 Apr '16

11 Apr '16

Special Hermitian metrics on non-Kähler manifolds ----------------------------------------- http://gecogedi.dimai.unifi.it/event/225/ Date: Wednesday, Apr 20, 2016 -- Friday, Apr 22, 2016 Place: Aula Tricerri, DiMaI "Ulisse Dini", Università di Firenze, Italy The workshop:| *"Special Hermitian metrics on non-Kähler manifolds"*,| will be held:| on April 20-22, 2016,| at Dipartimento di Matematica e Informatica "Ulisse Dini",| Università di Firenze, Italy. 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)| Organizing Commitee: D. Angella, S. Calamai, C. Spotti Invited Speakers: V. Apostolov, A. Fino, M. Lock, A. Moroianu, L. Ornea, A. Otiman, M. Pontecorvo, M. Stanciu, N. Tardini, B. Weinkove webpage: http://nonkahlermetrics2016.dimai.unifi.it/ webpage: https://sites.google.com/site/nonkahlermetrics/

1 0

Fwd: contact and symplectic topology
by Paolo Lisca 07 Apr '16

07 Apr '16

Inoltro annuncio di scuola estiva per gli eventuali interessati. Paolo Lisca ---------- Forwarded message ---------- From: Brendan Owens <Brendan.Owens(a)glasgow.ac.uk> Date: 2016-04-06 13:19 GMT+02:00 Subject: contact and symplectic topology To: Paolo Lisca <lisca(a)dm.unipi.it> Dear Paolo, Do you think any PhD students or early career mathematicians (say up to 6 years from PhD) in Pisa might be interested in attending our Research School on contact and symplectic topology taking place in Glasgow, 20-24 June? The application deadline is next Monday 11th April. Further information is available at http://www.claymath.org/events/developments-contact-and-symplectic-topology I'd be grateful if you could pass this on to anyone who might be interested. Best wishes, Brendan

1 0

Seminari dei Baby-Geometri
by Nicoletta Tardini 07 Apr '16

07 Apr '16

Cari tutti, Giovedì 14 Aprile alle 14:30 presso la Sala Seminari del DM di Pisa si terrà il Seminario dei Baby-Geometri di Andrea Tamburelli (Université du Luxembourg ) dal titolo: "Introduzione alla geometria anti-de-Sitter e applicazioni alla teoria di Teichmüller" di cui riporto l'abstract: "Dopo una rapida introduzione alla geometria Lorentziana, ci concentreremo sullo studio delle varietà anti-de-Sitter, che, in qualche modo, sono l'analogo Lorentziano delle varietà iperboliche. Illustreremo in particolare la topologia e la geometria delle varietà anti-de-Sitter in dimensione 3 e vedremo come queste permettano di ottenere nuove dimostrazioni di risultati classici della teoria di Teichmüller, tra cui il teorema dei terremoti di Thurston." 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