{ "id": "2109.06545", "version": "v1", "published": "2021-09-14T09:31:28.000Z", "updated": "2021-09-14T09:31:28.000Z", "title": "A non-existence result for the $L_p$-Minkowski problem", "authors": [ "Christos Saroglou" ], "comment": "10 pages", "categories": [ "math.MG" ], "abstract": "We show that given a real number $p<1$, a positive integer $n$ and a proper subspace $H$ of $\\mathbb{R}^n$, the measure on the Euclidean sphere $\\mathbb{S}^{n-1}$, which is concentrated in $H$ and whose restriction to the class of Borel subsets of $\\mathbb{S}^{n-1}\\cap H$ equals the spherical Lebesgue measure on $\\mathbb{S}^{n-1}\\cap H$, is not the $L_p$-surface area measure of any convex body. This, in particular, disproves a conjecture from [Bianchi, B\\\"or\\\"oczky, Colesanti, Yang, The $L_p$-Minkowski problem for $-n