Geometria_Pisa

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Seminario giovedì
by Bruno Martelli 01 Oct '18

01 Oct '18

Buondì, Vi segnalo il seminario di geometria di giovedì prossimo (ore 16 aula seminari). Siete tutti invitati, A presto, Bruno Martelli Thursday, October 4, 2018 16:00 17:00 SEMINARI DI GEOMETRIA Sala Seminari (Dip. Matematica) Transverse invariants from the deformations of Khovanov sl_3 homology Carlo Collari In this talk I will describe some invariants for transverse links in S^3 (endowed with the symmetric contact structure) arising from the deformations of Khovanov sl_3 homology. I will start with a brief introduction to the theory of transverse links in S^3. Afterward, I will recall some known results concerning transverse invariants in link homologies. In particular, I will focus on the invariants coming from Khovanov-Rozansky homologies, and those coming from the deformations of Khovanov homology. After the introductory part, I will briefly describe the construction and the properties of the universal sl_3 link homology, due to Mackaay and Vaz, and define the transverse invariants. These invariants, which are called the \beta_3-invariants, are cycles in the universal sl_3 complex. Finally, I will state a result concerning the vanishing of the homology classes of these invariants, and compare it with similar results known for other invariants. The idea of the proof will be also given. Time permitting, I will also give a number of Bennequin-type inequalities which can be proved using the \beta_3-invariants.

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Conferenza
by Bruno Martelli 25 Sep '18

25 Sep '18

Buondì, vi giro questo annuncio di conferenza in onore dei 60 anni di Alessandra Iozzi. A presto, Bruno ------ Dear colleagues and friends, we are organizing a conference in honour of Alessandra Iozzi from January 22nd to January 25th in Zurich (Switzerland): https://www.math.ethz.ch/fim/conferences/groups-spaces-geometries-alessandr… We have a limited amount of funding for young researchers (deadline for applications October 31st), and all interested participants should register through the conference website (as the venue is small, after registering you should wait for our confirmation email, in November). We would love to see you in Zurich, and would be grateful if you forwarded this information to any potentially interested colleague and student. Best regards, Claire Burrin Tobias Hartnick Emmanuel Kowalski Beatrice Pozzetti Anna Wienhard

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Fwd: bando assegno di ricerca n. 4_2018
by Bruno Martelli 13 Sep '18

13 Sep '18

Segnalo un assegno di ricerca a Roma. Bruno ---------- Forwarded message --------- From: Mondello, Gabriele <mondello(a)mat.uniroma1.it> Date: Thu, Sep 13, 2018 at 3:29 PM Subject: Fwd: bando assegno di ricerca n. 4_2018 To: Ciao a tutti, vi scrivo per pubblicizzare un assegno di ricerca annuale presso il nostro dipartimento. A presto, Gabriele -------------------------------------- Bando per assegno di ricerca: https://www2.mat.uniroma1.it/sites/default/files/bando2018-4.pdf n. 4/2018 per il conferimento di n. 1 assegno annuale categoria A tip. II _ Matematica e sue applicazioni. SSD: tutti scadenza: 15 ottobre 2018 Responsabile scientifico: Direttore del Dipartimento ******************************************************************* *Dott.ssa Rosanna Briscese* *DIPARTIMENTO DI MATEMATICA "G. CASTELNUOVO"* *Amministrazione**SAPIENZA Università di Roma* *Piazzale Aldo Moro, 5 <https://maps.google.com/?q=Piazzale+Aldo+Moro,+5%C2%A0+00185+Roma&entry=gma…>* *00185 Roma <https://maps.google.com/?q=Piazzale+Aldo+Moro,+5%C2%A0+00185+Roma&entry=gma…>* *Tel. (+39) 06 49913271 * *e-mail: *rosanna.briscese(a)uniroma1.it

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Fwd: Conference and winter school, Jan 7-11 and 14-18, 2019
by Bruno Martelli 27 Aug '18

27 Aug '18

Inoltro info su conferenza su strutture geometriche con scuola a Nizza. A presto, Bruno ---------- Forwarded message --------- From: Jean-Marc Schlenker <jeanmarc.schlenker(a)gmail.com> Date: Mon, Aug 27, 2018 at 2:13 PM Subject: Conference and winter school, Jan 7-11 and 14-18, 2019 To: Cc: jean-marc.schlenker(a)uni.lu <jean-marc.schlenker(a)uni.lu> Dear colleagues, We would like to bring your attention to the conference and winter school on geometric structures, organized in Nice, Jan 7-11 and 14-18, 2019. http://math.uni.lu/geometry/nice2019/index.html http://math.uni.lu/geometry/nice2019school/index.html We would be grateful if you could inform potential participants, in particular young researchers who might be interested in the winter school. The deadline for asking for financial support is Nov 12, 2018 (see the "registration" tab). The speakers for the winter school are: Nicolas Bergeron (University Paris 6) Kenneth Bromberg (University of Utah) Indira Chatterji (University of Nice) David Dumas (University of Illinois at Chicago) Alessandra Iozzi (ETH Zürich) and for the conference: Jean-Philippe Burelle (IHES) Valentina Disarlo (University of Heidelberg) Vladimir Fock (University of Strasbourg) Selim Ghazouani (University of Warwick) Elise Goujard (University of Bordeaux) François Guéritaud (University of Lille) Dominique Hulin (University Paris-Saclay) Richard Kenyon (Brown University) Qiongling Li (QGM-Aarhus University and Caltech) Sara Maloni (University of Virginia) Hugo Parlier (University of Luxembourg) Anne Parreau (University of Grenoble-Alpes) Joan Porti (Autonomous University of Barcelona) Beatrice Pozzetti (University of Heidelberg) Alan Reid (University of Texas) Laura Schaposnik (University of Illinois at Chicago) Rich Schwartz (Brown University) Andrea Seppi (University of Luxembourg) Ilia Smilga (Yale University) Jeremy Toulisse (University of Southern California) Tengren Zhang (Caltech) Thanks in advance. Jean-Marc Schlenker (for the organizing committee) -- Jean-Marc Schlenker +352 46 66 44 5438 Université du Luxembourg, UR en Mathématiques Maison du nombre, 6 avenue de la Fonte L-4364 Esch-sur-Alzette, Luxembourg http://math.uni.lu/schlenker

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Fwd: Postdoctoral position in memory of Paolo de Bartolomeis
by Bruno Martelli 24 Aug '18

24 Aug '18

Inoltro avviso di borsa post-doc a Firenze in geometria. Ciao, Bruno ---------- Forwarded message ---------- From: Graziano Gentili <graziano.gentili(a)unifi.it> Date: Fri, Aug 24, 2018 at 9:22 AM Subject: Postdoctoral position in memory of Paolo de Bartolomeis To: Graziano Gentili <graziano.gentili(a)unifi.it> Postdoctoral position in memory of Paolo de Bartolomeis Deadline: 10 oct 2018 a postdoctoral position has been established at the Dipartimento di Matematica e Informatica "U. Dini", Università di Firenze, Italy. Strong candidates pursuing research in Complex and Symplectic Geometry, in the broadest sense, are warmly encouraged to apply within October, 10, 2018. The duration of this position is one year, possibly extendable for one further year. Details for the application can be found at the following links https://titulus.unifi.it/albo/viewer?view=files%2F002788389- UNFICLE-d6490c75-8ecb-46c8-a627-9f6e1ff7d1a8-000.pdf http://web.math.unifi.it/users/nannicini/florence_postdoc_2018.pdf This position has been established in memory of Professor Paolo de Bartolomeis and is fully funded by his family, with the aim of giving the opportunity to a young researcher to carry out research in the above fields. Please circulate this announcement to potential candidates. For further information please contact: fiammetta.battaglia(a)unifi.it antonella.nannicini(a)unifi.it

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Fwd: Post-doc' announcement
by Carlo Petronio 07 Jul '18

07 Jul '18

-------- Messaggio Inoltrato -------- Oggetto: Post-doc' announcement Data: Sat, 7 Jul 2018 18:21:06 +0200 Mittente: Gwenael Massuyeau <gwenael.massuyeau(a)u-bourgogne.fr> A: gwenael.massuyeau(a)u-bourgogne.fr Dear Colleagues, I would be very grateful if you could forward the following announcement for a post-doctoral position in Dijon to anyone who might be interested. (Please note that the deadline is close !) Best regards, Gwenael. ************************************************************************************ *Post-doctoral position * In the framework of the ANER project ITIQ-3D, recently funded by the "Région Bourgogne Franche-Comté", a one-year post-doctoral position is available at the "Institut de Mathématiques de Bourgogne" <https://math.u-bourgogne.fr/> in Dijon. The general research areas are low-dimensional topology and quantum topology. Some more specific research themes are * finite-type invariants of knots & 3-manifolds, * categorification of knot & 3-manifold invariants, * applications to mapping class groups of surfaces. There are no teaching duties and the salary (before income taxes) will be about 2350€ per month. The starting date should be between October 1, 2018 and December 1, 2018. To apply please send a CV, including a list of publications, and a cover letter with research interests to gwenael.massuyeau(a)u-bourgogne.fr <mailto:> by July 20, 2018.

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Fwd: Professor position in Geometry, University of Luxembourg
by Bruno Martelli 18 Jun '18

18 Jun '18

Segnalo una posizione da professore in geometria in Lussemburgo. Saluti, Bruno ---------- Forwarded message ---------- From: Jean-Marc Schlenker <jeanmarc.schlenker(a)gmail.com> Date: Sat, Jun 16, 2018 at 9:54 PM Subject: Professor position in Geometry, University of Luxembourg To: Cc: "jean-marc.schlenker(a)uni.lu" <jean-marc.schlenker(a)uni.lu> Dear colleagues, A professor position in geometry is currently open at the University of Luxembourg. I would be grateful if you could transfer this information to any potential candidate. To apply, see http://emea3.mrted.ly/1vac5 Deadline is Nov 30, 2018. All the best, Jean-Marc -- Jean-Marc Schlenker +352 46 66 44 5438 Université du Luxembourg, UR en Mathématiques Maison du nombre, 6 avenue de la Fonte L-4364 Esch-sur-Alzette, Luxembourg http://math.uni.lu/schlenker

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Seminario giovedì
by Bruno Martelli 18 Jun '18

18 Jun '18

Buondì, Segnalo un seminario di geometria giovedì prossimo. A presto, Bruno ------- 21-Jun-2018 - 15:00 Sala Seminari (Dip. Matematica) <http://www.dm.unipi.it/webnew/it/aula/sala-seminari-dip-matematica> The AJ conjecture for SU(2) and SL(2,C) <http://www.dm.unipi.it/webnew/it/seminari/aj-conjecture-su2-and-sl2c> Alessandro Malusà Given a knot K in S^3, one can consider as invariants the A-polynomial and the coloured Jones polynomial. After illustrating the original AJ conjecture, as formulated by Garoufalidis, I will specify its motivation from quantum SU(2)-Chern-Simons theory, and attempt to make sense of the statement that the two invariants mentioned above are classical and quantum in nature, respectively. This opens the question as of whether one can formulate an analogous conjecture for different Lie groups. For SL(2,C), the existence of an invariant corresponding to the coloured Jones polynomial has been conjectured by Andersen and Kashaev; I will discuss how a construction similar to the one by Garoufalidis leads to an AJ-conjecture for this invariant.

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Fwd: [Algtop] due seminari giovedì 31
by Bruno Martelli 30 May '18

30 May '18

Buongiorno, Segnalo due seminari di geometria / algebra per domani pomeriggio. A presto, Bruno ====================================== giovedi` 31 maggio ore 15 aula seminari Luca Battistella Relative quasimaps and quasimap quantum Lefschetz Quasimaps provide a compactification of the space of maps from smooth curves to a GIT quotient; Ciocan-Fontanine and Kim used them to prove beautiful wall-crossing formulae, comparing the resulting invariants with ordinary Gromov-Witten ones. In joint work with Navid Nabijou, we introduce the notion of genus zero relative quasimaps to a toric target X with respect to a smooth (but not necessarily toric) hyperplane section Y, extending work of Gathmann to this setting. Increasing the tangency requirement gives us smaller and smaller moduli spaces; their virtual classes are related by a simple recursion formula. Gathmann's inductive algorithm allows us to compute restricted invariants of Y from those of X. Under some positivity assumption, this can be made into a compact formula for generating series of quasimap invariants, which recovers a result of Ciocan-Fontanine and Kim. We are working towards an extension of this approach to reduced genus one invariants. giovedi` 31 maggio ore 16 aula seminari Giovanni Inchiostro Moduli of Weierstrass fibrations. We study the the moduli space of KSBA stable pairs (X,sS+\sum a_i F_i), consisting of a Weierstrass fibration X, its section S, and some fibers F_i. We find a compactification which is a DM stack, and we prove that there are wall-crossing morphisms when the weights s and a_i change. This recovers the work of Ascher and Bejleri in the case in which s=1 and the one of La Nave when s=1 and a_i=0. _______________________________________________ Algtop mailing list Algtop(a)fields.dm.unipi.it https://fields.dm.unipi.it/listinfo/algtop

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Ultimo seminario dei Baby Geometri
by Marco Moraschini 25 May '18

25 May '18

Cari tutti, vi segnalo l'ultima attività per il ciclo di seminari dei Baby Geometri di quest'anno: Lunedì 28 Maggio alle 16:30 presso l'Aula Magna del Dipartimento di Matematica Mauro Artigiani (Centro De Giorgi) terrà un seminario dal titolo: Dynamics on translation surfaces: a (very very very) short survey di cui riporto l'abstract: "Translation surfaces are surfaces which come naturally into play both from a dynamical motivation (billiards in polygons) and from a more algebro-geometrical point of view (they are related to the Teichmuller space). We will start with some examples, give some motivations about why one is interested in them and then focus more on the dynamical side. We will give a short survey of some more or less classical result from the very rich literature. Time permitting, we will also relate this to some Diophantine approximation." A seguire ci sarà un brindisi per sancire la fine del ciclo di seminari per quest'anno! Tutti gli interessati sono invitati a partecipare. Per saperne di più sui prossimi seminari scrivete a babygeometri(a)cs.dm.unipi.it <https://student-web1.dm.unipi.it/squirrelmail/src/compose.php?send_to=babyg…> o consultate la nostra pagina web: http://people.dm.unipi.it/babygeometri/ Saluti, Giulio Belletti, Edoardo Fossati e Marco Moraschini

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