Topology Seminar——Generalized torsion and Dehn filling
                    
                  
                  
                  
                    报告人:Junhua Wang (Jiangsu University of Technology)
 
                    时间:2021-12-21   15:10-17:00
  
                    地点:Room 1114, Sciences Building No. 1
                   
                  
                    Abstract: There is an interesting conjecture that a 3-manifold group is bi-orderable iff it has no generalized torsion element. It implies another conjecture that a Dehn filling has a generalized torsion element if the surgery slope is not meridian and longitude. In this talk, we follow a paper of Ito-Motegi-Teragaito. They construct generalized torsion elements for some knots’ Dehn fillings to support the second conjecture.