Links, homology cobordism, and Milnor’s invariants
Курс![](https://www.lektorium.tv/sites/lektorium.tv/files/courses/1370977627_22963_LChKent_Orr_Slicing_knots_and_homology_cobordism_2.mp4_snapshot_00.50.24_%5B2013.06.11_19.47.07%5D.jpg)
In these two talks I will discuss an old and fundamental sequence of invariants due to John Milnor, and efforts to extend this sequence of invariants transfinitely. One can define a natural extension of Milnor's invariants to study homology cobordism invariants classes of 3-manifolds, and we will discuss new results in this direction as well.