seminar: Limit stable objects on Calabi-Yau 3-folds

speaker: Yukinobu Toda (Institute for the Physics and Mathematics of the Universe, University of Tokyo)

abstract: The purpose of this talk is to introduce the notion of limit stability on the category of perverse coherent sheaves on Calabi-Yau 3-folds, and construct new enumerative invariants of curves via limit stable objects. I will show that such invariants are generalizations of stable pair invariants introduced by Pandharipande and Thomas. I will show that investigations of wall-crossing phenomena of limit stable objects lead to the solution of the rationality conjecture of stable pair invariants.

timetable:
Tue 24 Jun, 15:45 - 16:45, Aula Dini
<< Go back