{ "id": "2209.03011", "version": "v1", "published": "2022-09-07T09:13:57.000Z", "updated": "2022-09-07T09:13:57.000Z", "title": "A note on the supersolution method for Hardy's inequality", "authors": [ "Francesca Bianchi", "Lorenzo Brasco", "Firoj Sk", "Anna Chiara Zagati" ], "comment": "14 pages", "categories": [ "math.AP", "math.FA" ], "abstract": "We prove a characterization of Hardy's inequality in Sobolev-Slobodecki\\u{\\i} spaces in terms of positive local weak supersolutions of the relevant Euler-Lagrange equation. This extends previous results by Ancona and Kinnunen & Korte for standard Sobolev spaces. The proof is based on variational methods.", "revisions": [ { "version": "v1", "updated": "2022-09-07T09:13:57.000Z" } ], "analyses": { "keywords": [ "hardys inequality", "supersolution method", "standard sobolev spaces", "positive local weak supersolutions", "relevant euler-lagrange equation" ], "note": { "typesetting": "TeX", "pages": 14, "language": "en", "license": "arXiv", "status": "editable" } } }