Title: Optimal smooth approximation of integral cycles Speaker: Camillo De Lellis (Institute for Advanced Study, Princeton) Abtract: Integer rectifiable currents without boundary were introduced in the 60es as a good variational generalization of smooth cycles (smooth oriented submanifolds without boundary) of Riemannian manifolds. In the presentation I will give an idea of the foundational paper of Federer and Fleming, who introduced the concept which later became a powerful tool to tackle variational problems like the existence of submanifolds of least area in every integral homology class. One of the most […]