Orateur: Maciej
Borodzik (University of Warsaw)
Titre: Heegaard Floer
homologies and splitting numbers of links.
Résumé:
Given a link L in S^3 we define a function H_L on a lattice for the
link. The function can be used to calculate d-invariants of large surgeries
on links. Given a singular concordance between two links we obtain some
inequalities between H_L functions. This allows us to find bounds for the
splitting number of some links. This is a joint work with Eugene Gorsky.