Aug. 28-30, Changchun at Department of Mathematics, Jilin University
Fei Han(National University of Singapore)
Yunhe Sheng (Jilin University)
Yong Wang(Northeast Normal University)
Chenchang Zhu (Goettingen University)
[Jianxun Hu]
Uniruled symplectic orbifold
Bailing Wang(Australian National University)
(1) Natural higher structures in geometry and topology
Abstract: In this talk, I will review some basics of topological spaces, smooth manifolds, and vector bundles and the role of cocycle conditions in their construction. Then I will explain how violations of the cocycle conditions lead to natural higher structures in geometry and topology:
orientation structures, spin structure and string structure. The talk will end with a 30-year outstanding question about Dirac operators on loop spaces.
(2) Gerbes, D-branes and index theory
Abstract: In this second talk, I will explain another notion of higher structures: gerbes, and its role in the study of D-branes. Then I will give a mathematical definition of D-branes and its relation to twisted version of Atiyah-Singer index theorem.
[Hang Wang]
An introduction to index theory of invariant Dirac operators
In the first hour I will introduce Dirac operators and some properties, on manifolds and manifolds with group actions, and definition of higher index. In the second hour I will talk about some variations of indices and their connections to representation theory.
[Yijun Yao]
非交换环面上的正上圈
我们将遵循Connes的想法，讨论二维非交换环面上的正上圈的一些相关性质
| Time | Speaker | Title | |
| Sep 28 | 9:00-10:00 | Wang Hang | An introduction to index theory of invariant Dirac operators |
| 10:30-11:30 | Wang Hang | An introduction to index theory of invariant Dirac operators | |
| 15:00-16:00 | Bailing Wang | Natural higher structures in geometry and topology | |
| 16:30-17:30 | Bailing Wang | Gerbes, D-branes and index theory | |
| Sep 29 | 9:00-10:00 | Hu Jianxun | Uniruled symplectic orbifold |
| 10:30-11:30 | Hu Jianxun | Uniruled symplectic orbifold | |
| 15:00-16:00 | Yao Yijun | 非交换环面上的正上圈 | |
| 16:30-17:30 | Yao Yijun | 非交换环面上的正上圈 |