buondì,
vi annuncio il seminario di geometria di domani mattina. a presto, Bruno
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30-Jun-2016 - 11:00 Sala Seminari (Dip. Matematica) http://www.dm.unipi.it/webnew/it/aula/sala-seminari-dip-matematica Dehn surgery and rational homology balls http://www.dm.unipi.it/webnew/it/seminari/dehn-surgery-and-rational-homology-balls Marco Golla
Abstract:
Which 3-manifolds bound rational homology 4-balls? This question arises naturally in a variety of settings, and we address it in the case of surgeries along knots and their cables. The techniques we use are a combination of Heegaard Floer homology and Donaldson theorem.
This is joint work (partly in progress) with Paolo Aceto, Kyle Larson, and Ana Lecuona.