國家理論科學研究中心學術演講
NCTS Seminar in Algebraic Geometry

 (1)

  Speaker :      Prof.Jiun-Cheng CHEN 陳俊成

            (Northwestern University, USA)

  Time      :       December 29 (Wed.)  12:45 - 14:00

  Title       :       Fano threefold hypersurface after Corti, Puklikov and Reid

  Abstract:

  Smooth fano threefolds are well-known in birational geometry. Singular

  Fano threefold are less well-understood. The techinques are much more

  complicated. I will report on Corti, Puklikov and Reid'w work on Fano

  threefold hyperface, and try to explain the difficulities involved in this

  subject.

  Basically, this will be a continuation of my talk in NCTS this summer.

  However, I will not assume the audience has attended the previous talk:

  I will give a necessary review on the relevent terminologies (about 15-20

   minutes), and proceed to a more detailed proof.

 (2)

  Speaker  :     Prof. Y.-P. LEE 李元斌 (University of Utah)

  Time       :     December 29 (Wed.)  14:15 - 15:15

  Title        :     Relative Gromov-Witten theory and moduli of curves (I)
  Abstract :

  The goal of this series of talks is to explain some applications of the

  relative Gromov-Witten theory to the study of moduli of curves, after

  Faber-Pandharipande and Graber-Vakil.

 (3)

  Speaker  :     Hsian-Hua TSENG 曾祥華

                      (University of California at Berkeley)
  Time       :     December 29 (Wed.)  15:30-17:00

  Title        :     Twisted Orbifold Gromov-Witten Invariants
  Abstract :

  For a Deligne-Mumford stack, we will introduce its orbifold

  Gromov-Witten invariants twisted by a vector bundle and a characteristic

  class. We will explain a formula expressing a generating function of these

  twisted invariants in terms of the usual Gromov-Witten invariants, along

  with some applications. If time permitted, we will discuss its proof.
　

Lecture Room B,

National Center for Theoretical Sciences

4th Floor, The 3rd General Building,

National TsingHua University