Geometry and Topology Seminar——Producing algebraic overtwistedness and torsion using cobordisms
                    
                  
                  
                  
                    报告人:周正一(中国科学院大学)
 
                    时间:2023-10-18   15:10-17:00
  
                    地点:智华楼四元厅(224,225)
                   
                  
                    
Abstract: I will explain the vanishing of contact homology arising from certain contact +1 surgeries, which include all overtwisted manifolds. Combining the surgery cobordism and certain strong cobordisms, we produce contact manifolds with any algebraic (planar) torsion in higher dimensions, which settles a conjecture of Latschev and Wendl.