{ "id": "2203.14181", "version": "v1", "published": "2022-03-27T01:19:33.000Z", "updated": "2022-03-27T01:19:33.000Z", "title": "On a sharp inequality of Adimurthi-Druet type and extremal functions", "authors": [ "José Francisco de Oliveira", "João Marcos do Ó" ], "categories": [ "math.AP" ], "abstract": "Our main purpose in this paper is to establish the existence and nonexistence of extremal functions for sharp inequality of Adimurthi-Druet type for fractional dimensions on the entire space. Precisely, we extend the sharp Trudinger-Moser type inequality in (Calc.Var.Partial Differential Equations, \\textbf{52} (2015) 125-163) for the entire space. In addition, we perform the two-step strategy of Carleson-Chang together blow up analysis method to ensure the existence of maximizers for the associated extremal problems for both subcritical and critical regimes. We also present a nonexistence result under subcritical regime for some special cases.", "revisions": [ { "version": "v1", "updated": "2022-03-27T01:19:33.000Z" } ], "analyses": { "subjects": [ "35J20", "46E35", "26D10", "35B33" ], "keywords": [ "extremal functions", "adimurthi-druet type", "sharp inequality", "sharp trudinger-moser type inequality", "entire space" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }