{ "id": "0904.1489", "version": "v1", "published": "2009-04-09T09:42:38.000Z", "updated": "2009-04-09T09:42:38.000Z", "title": "On the positive solutions to some quasilinear elliptic partial differential equations", "authors": [ "Octavian G. Mustafa", "Yong Zhou" ], "categories": [ "math.AP", "math-ph", "math.MP" ], "abstract": "We establish that the elliptic equation $\\Delta u+f(x,u)+g(| x|)x\\cdot \\nabla u=0$, where $x\\in\\mathbb{R}^{n}$, $n\\geq3$, and $| x|>R>0$, has a positive solution which decays to 0 as $| x|\\to +\\infty$ under mild restrictions on the functions $f,g$. The main theorem extends and complements the conclusions of the recent paper [M. Ehrnstr\\\"{o}m, O.G. Mustafa, On positive solutions of a class of nonlinear elliptic equations, Nonlinear Anal. TMA 67 (2007), 1147--1154]. Its proof relies on a general result about the long-time behavior of the logarithmic derivatives of solutions for a class of nonlinear ordinary differential equations and on the comparison method.", "revisions": [ { "version": "v1", "updated": "2009-04-09T09:42:38.000Z" } ], "analyses": { "subjects": [ "35A35", "35B40" ], "keywords": [ "quasilinear elliptic partial differential equations", "positive solution", "nonlinear ordinary differential equations", "nonlinear elliptic equations", "main theorem extends" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2009arXiv0904.1489M" } } }