2023/03/26 by Yasuaki Fujitani, Fujitani, Yasuaki · 1 citation
Mathematics · Medicine · #Differential Geometry (math.DG) #FOS: Mathematics #Geometric Analysis and Curvature Flows #Nonlinear Partial Differential Equations #Pelvic and Acetabular Injuries
paper · pdf · doi:10.48550/arxiv.2303.14607
openalex publication_date 2023/03/26 · openalex created_date 2023/03/31 · openalex updated_date 2026/07/28
The behavior of harmonic functions on Riemannian manifolds under lower bounds of the Ricci curvature has been studied from both analytic and geometric viewpoints. For example, some Liouville type theorems are obtained under lower bounds of the Ricci curvature. Recently, those results are generalized under lower bounds of the N-weighted Ricci curvature RicψN with N ∈ [n,∞]. In this paper, we present a Liouville type theorem for harmonic functions of sublinear growth and a gradient estimate of harmonic functions on weighted Riemannian manifolds under weaker lower bounds of RicψN with N < 0. We also prove an Lp-Liouville theorem under lower bounds of RicψN with N ∈ [n,∞] in a way different from that of [Wu, 2014]. Our results are obtained as a consequence of an argument under lower bounds of RicψN with ε-range, which is a unification of constant and variable curvature bounds. Among various methods considered for the analysis of harmonic functions, this paper focuses on methods using the Moser's iteration procedure.