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.

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