| Speaker: | Ugo Bruzzo (SISSA) |
|---|---|
| Title: | The Noether-Lefschetz problem for normal threefolds |
| Date (JST): | Tue, Sep 25, 2018, 15:30 - 17:00 |
| Place: | Seminar Room B |
| Abstract: | The classical Noether-Lefschetz theorem states that the very general surface in P3 has Picard number 1. The locus of surfaces with a larger Picard number has a complicated geometry; results obtained in the late 80s characterized its components of small codimension, and proved that it is dense in the space of all surfaces. In this talk I will show how to extend some of these results to surfaces in normal 3-folds. Work in collaboration with A. Grassi and (partly) with A. F. Lopez. |
| Remarks: | Blackboard talk |
