On the extremals of the Pólya-Szegő inequality
arXiv:1407.6567 · doi:10.1512/iumj.2015.64.5652
Abstract
The distance of an extremal of the Pólya-Szegő inequality from a translate of its symmetric decreasing rearrangement is controlled by the measure of the set of critical points.
17 pages, 3 figures