[Geometria_pisa] seminario domani

buondì, siete invitati domani alle 16 al consueto seminario di geometria del mercoledì. Bruno ------- MERCOLEDI' 19 FEBBRAIO 2014 SEMINARI DI GEOMETRIA 16:00-17:00, Sala Seminari (Dip. Matematica) Dehn surgery and Seifert surface system Makoto Ozawa (Komazawa University) Abstract: For a compact connected 3-submanifold with connected boundary in the 3-sphere, we relate the existence of a Seifert surface system with a Dehn surgery along a null-homologous link. As its corollary, we obtain the Fox's re-embedding theorem. This is joint work with Koya Shimokawa (Saitama University).