Geometry and Topology Seminar——圆丛间的映射
                    
                  
                  
                  
                    报告人:王诗宬(北京大学)
 
                    时间:2024-09-23  15:10-17:00
  
                    地点:智华楼四元厅
                   
                  
                    
Abstract: Circle bundles over surfaces are primary examples of fiber bundles, and cover six of eight geometries in Thurston's picture of 3-manifolds, and many inspiring phenomena arise from them. The non-zero degree maps between circle bundles over surfaces often are well-behaved.
We will talk about maps between $S^1$-bundles over $n$-manifolds, including motivations, methods, results and applications.