# Pengfei Guan: Geometric flows from viewpoint of calculus of variations

**Time: **
Thu 2022-10-06 14.00 - 15.00

**Location: **
Institut Mittag-Leffler, Seminar Hall Kuskvillan and Zoom

**Video link: **
Meeting ID: 921 756 1880

**Participating: **
Pengfei Guan (McGill University)

**Abstract:**

We discuss flow approach for isoperimetric problems. Given two geometric functionals, one would like to find optimal relationship between them (e.g., classical isoperimetric inequality for volume and surface area). This can be stated as a variational problem: find extremal of one functional with the other constrained. One would like to design flows serving as good paths to the optimal solution. This consideration leads to a new class of interesting curvature flows, mean curvature type and inverse mean curvature type. The longtime existence and convergence are the main focus. We discuss some new results and open problems.