July 2015 - Geometria_Pisa - Mailing list — Dipartimento di Matematica, UniPI

seminario oggi
by Bruno Martelli 15 Jul '15

15 Jul '15

buondì, vi segnalo il seminario di geometria di oggi, alle 16 come sempre, ma in aula magna. a presto, Bruno ---- 15-Jul-2015 - 16:00 Aula Magna (Dip. Matematica) Marco Castronovo Twisted Whitney towers and concordance of links Abstract: The Whitney trick can be used to remove intersection points in generic immersed concordances of links. Due to the fact that Whitney disks may intersect the concordance and each other, sometimes one only trades old with new intersections and these organize in "towers" that admit a combinatorial description in terms of trees modulo some relations. These relations show up in other areas of topology like those of quantum and finite type invariants. For example, there is a connection with Milnor invariants and the Kontsevich integral. Some subtelties regarding framing of Whitney disks suggest that a "twisted" version of these towers should be related to new concordance invariants with values in powers of Z/2 generalizing the classical Arf invariant of knots.

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posto da ricercatore di tipo A
by Bruno Martelli 13 Jul '15

13 Jul '15

buondì, mi scuso per eventuali duplicati, ma è meglio abbondare: è aperto un bando come ricercatore di tipo A in algebra e geometria a Pisa, e scade il 30 luglio: http://www.unipi.it/ateneo/bandi/ricercat/ricercator/Ricercator/index.htm Vi prego di darne la più ampia diffusione ciao Bruno

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[GeCo GeDi seminar] E. Calabi's diastasis function
by daniele.angella＠gmail.com 12 Jul '15

12 Jul '15

E. Calabi's diastasis function ----------------------------------------- http://gecogedi.dimai.unifi.it/seminar/362/ Date: Monday, Jul 13, 2015 Time: 15:00 Place: Aula Bianchi scienze, SNS, Pisa Speaker: Michela Zedda GR14 SNS "Geometry of non Kähler manifolds" Abstract. The diastasis function is a powerful tool introduced by E. Calabi to study the existence of holomorphic and isometric immersions of Kaehler manifolds into complex space forms. The criterion Calabi provides to determine whether or not a Kaehler manifold admits such an immersion is theoretically impeccable but difficult to be applied and many questions are still open. The aim of this talk is to introduce the diastasis function and to give an overview of the open problems related.

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[GeCo GeDi seminar] A gentle introduction to lck geometry
by daniele.angella＠gmail.com 09 Jul '15

09 Jul '15

A gentle introduction to lck geometry ----------------------------------------- http://gecogedi.dimai.unifi.it/seminar/356/ Date: Friday, Jul 10, 2015 Time: 15:00 Place: Aula Bianchi scienze, SNS, Pisa Speaker: Victor Vuletescu GR14 SNS "Geometry of non Kähler manifolds" Abstract. The aim of the talk is to give a short report on Locally Conformally Kahler (LCK, for short) manifolds. Some recent results in the area will be detailed, including some work in progress with L. Ornea and M. Verbitsky.

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seminari di geometria complessa a Pisa
by Daniele Angella 07 Jul '15

07 Jul '15

Cari tutti, vi segnalo/ricordo tre seminari di geometria complessa in programma nelle prossime due settimane a Pisa: - venerdi' 10 luglio, 15:00: Victor Vuletescu: "A gentle introduction to lck geometry" - lunedi' 13 luglio, 15:00: Michela Zedda: "E. Calabi's diastasis function" - venerdi' 17 luglio, 15:00: Chengjian Yao: "Singular Kahler-Einstein metrics on Q-Fano varieties" Tutti i seminari si terranno alle 15:00 nell'aula Bianchi-scienze della Scuola Normale. Trovate gli abstract su: http://gecogedi.dimai.unifi.it/seminars/ Un saluto, Daniele

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seminario mercoledì
by Bruno Martelli 06 Jul '15

06 Jul '15

buondì, vi annuncio il seminario di geometria di mercoledì prossimo (dopodomani). a presto, Bruno ------ 08-Jul-2015 - 16:00 Sala Seminari (Dip. Matematica) Kyle Larson (Austin, Texas) Torus surgery in the 4-sphere I will introduce the operation of torus surgery in the 4-sphere, and describe some recent results concerning which 4-manifolds can be produced in this way and the uniqueness of such descriptions. As a motivation I will discuss analogous results and problems about Dehn surgery on knots in the 3-sphere. I will also discuss some applications to embedding 3-manifolds into 4-manifolds.

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