A Noether-Lefschetz Theorem for Spectral Varieties with Applications
                    
                  
                  
                  
                    报告人:Xiaoyu Su (Tsinghua University)
 
                    时间:2021-10-25 10:00-11:00
  
                    地点:online
                   
                  
                    Abstract: In this talk we will talk about our recent results about the Picard group of generic (very general) Vafa-Witten spectral varieties. We will first review the concept of spectral varieties, Higgs sheaves and their relation with the Noether-Lefschetz type Theorems. Then we introduce our main results and an application.
 
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