Special Year 2018-19: Variational Methods in Geometry

Variational Methods in Geometry Seminar

January 29, 2019 | 3:30pm - 5:30pm

We prove that the systole (or more generally, any k-th homology systole) of a minimal surface in an ambient three manifold of positive Ricci curvature tends to zero as the genus of the minimal surfaces becomes unbounded. This is joint work with Anna...

Variational Methods in Geometry Seminar

January 29, 2019 | 1:00pm - 3:00pm

We shall present a procedure which to any admissible family of immersions of surfaces into an arbitrary closed riemannian manifolds assigns a smooth, possibly branched, minimal surface whose area is equal to the width of the corresponding minmax and...

Variational Methods in Geometry Seminar

January 22, 2019 | 3:30pm - 5:30pm

Mean curvature flow is the negative gradient flow of the volume functional which decreases the volume of (hyper)surfaces in the steepest way. Starting from any closed surface, the flow exists uniquely for a short period of time, but always develops...

Variational Methods in Geometry Seminar

January 22, 2019 | 1:00pm - 3:00pm

In this talk I would like to explain how methods from symplectic geometry can be used to obtain sharp systolic inequalities. I will focus on two applications. The first is the proof of a conjecture due to Babenko-Balacheff on the local systolic...

Variational Methods in Geometry Seminar

January 15, 2019 | 3:30pm - 5:30pm

Minimal surfaces are critical points of the area functional. In this talk I will discuss classification results for minimal surfaces with index one in 3-manifolds with non-negative Ricci curvature and outline the proof that in spherical space forms...

Variational Methods in Geometry Seminar

January 15, 2019 | 1:00pm - 3:00pm

The lecture will discuss recent joint work with C. Bellettini and O. Chodosh. The work taken together establishes sharp regularity conclusions, compactness and curvature estimates for any family of codimension 1 integral $n$-varifolds satisfying: (i...

Variational Methods in Geometry Seminar

December 18, 2018 | 1:00pm - 3:00pm

Renormalized volume (and more generally W-volume) is a geometric quantity found by volume regularization. In this talk I'll describe its properties for hyperbolic 3-manifolds, as well as discuss techniques to prove optimality results.

Variational Methods in Geometry Seminar

December 11, 2018 | 3:30pm - 5:30pm

In the 90's, Gromov and Schoen introduced the theory of harmonic maps into singular spaces, in particular Euclidean buildings, in order to understand p-adic superrigidity. The study was quickly generalized in a number of directions by a number of...

Variational Methods in Geometry Seminar

December 04, 2018 | 1:00pm - 3:00pm

I will first survey some recent progress on global problems related to scalar curvature and area/volume, focusing in particular on scale breaking phenomena in such problems. I will then discuss the role of the Hawking mass in the resolution of this...