{ "id": "1909.11441", "version": "v1", "published": "2019-09-25T12:39:53.000Z", "updated": "2019-09-25T12:39:53.000Z", "title": "Sharp stability for the Riesz potential", "authors": [ "Nicola Fusco", "Aldo Pratelli" ], "categories": [ "math.FA" ], "abstract": "In this paper we show the stability of the ball as maximizer of the Riesz potential among sets of given volume. The stability is proved with sharp exponent $1/2$, and is valid for any dimension $N\\geq 2$ and any power $1<\\alpha