国家数学与交叉科学中心合肥分中心报告会

报告题目：Brunnian type Link invariants from homotopy groups of the 3-sphere

报 告 人：雷逢春 教授
          大连理工大学
 
报告时间：2013年5月14日 下午4:30

报告地点：管理科研楼室1518

Abstract: We introduce the (general) homotopy groups of spheres as link invariants for Brunnian-type links through the investigations on the intersection subgroup of the normal closures of the meridians of strongly nonsplittable links. The homotopy groups measure the difference between the intersection subgroup and symmetric commutator subgroup of the normal closures of the meridians and give the invariants of the links obtained in this way. Some examples are given that their difference could be detected by the higher homotopy-group invariant but could not be detected by the Milnor invariants. This is a joint work with Jie Wu and Fuquan Fang.

主办单位：365英国上市官网
          国家数学与交叉科学中心合肥分中心

       
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