buondì, vi annuncio il seminario di geometria di domani. Per colpa mia titolo e abstract non erano presenti nel notiziario di venerdì. a presto, Bruno ----- 01-Jul-2015 - 16:00 Sala Seminari (Dip. Matematica) Marco Golla Twisting (Heegaard Floer) correction terms Correction terms in Heegaard Floer homology are rational numbers associated to rational homology spheres, introduced by Ozsváth and Szabó (inspired by the work of Frøyshov in Seiberg-Witten theory). These invariants have been used to study the topology of 4-manifolds whose boundary is a rational homology sphere. We use twisted coefficients to generalise this construction to arbitrary 3-manifolds, and give some applications. This is joint work with Stefan Behrens.