buondì,

vi annuncio il seminario di geometria di mercoledì prossimo (dopodomani).

a presto, Bruno

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08-Jul-2015 - 16:00 Sala Seminari (Dip. Matematica) Kyle Larson (Austin, Texas)

Torus surgery in the 4-sphere

I will introduce the operation of torus surgery in the 4-sphere, and describe some recent results concerning which 4-manifolds can be produced in this way and the uniqueness of such descriptions. As a motivation I will discuss analogous results and problems about Dehn surgery on knots in the 3-sphere. I will also discuss some applications to embedding 3-manifolds into 4-manifolds.