{ "id": "2308.10303", "version": "v1", "published": "2023-08-20T15:59:18.000Z", "updated": "2023-08-20T15:59:18.000Z", "title": "Improved Hardy inequalities on Riemannian Manifolds", "authors": [ "Kaushik Mohanta", "Jagmohan Tyagi" ], "comment": "Accepted for publication in Complex Variables and Elliptic Equations", "doi": "10.1080/17476933.2023.2247998", "categories": [ "math.AP", "math.FA" ], "abstract": "We study the following version of Hardy-type inequality on a domain $\\Omega$ in a Riemannian manifold $(M,g)$: $$ \\int{\\Omega}|\\nabla u|_g^p\\rho^\\alpha dV_g \\geq \\left(\\frac{|p-1+\\beta|}{p}\\right)^p\\int{\\Omega}\\frac{|u|^p|\\nabla \\rho|_g^p}{|\\rho|^p}\\rho^\\alpha dV_g +\\int{\\Omega} V|u|^p\\rho^\\alpha dV_g, \\quad \\forall\\ u\\in C_c^\\infty (\\Omega). $$ We provide sufficient conditions on $p, \\alpha, \\beta,\\rho$ and $V$ for which the above inequality holds. This generalizes earlier well-known works on Hardy inequalities on Riemannian manifolds. The functional setup covers a wide variety of particular cases, which are discussed briefly: for example, $\\mathbb{R}^N$ with $p