Communications in Analysis and Geometry

Volume 30 (2022)

Number 2

Local and global gradient estimates for Finsler $p$-harmonic functions

Pages: 451 – 500

DOI: https://dx.doi.org/10.4310/CAG.2022.v30.n2.a6

Author

Qiaoling Xia (Department of Mathematics, School of Sciences, Hangzhou Dianzi University, Hangzhou, Zhejiang, China)

Abstract

In this paper, we give the local and global gradient estimates for positive Finsler $p$‑eigenfunctions on a complete Finsler manifold $M$ with the weighted Ricci curvature bounded from below by a negative constant. As applications, we obtain some Liouville and Harnack theorems, and the global gradient estimates for positive Finsler $p$‑harmonic functions. As a by-product of the global estimate, we obtain an upper bound of the first $p$‑eigenvalue $\lambda_{1,p}$ for Finsler $p$-Laplacian $\Delta_p$. Further, we study the geometric structure at infinity of Finsler manifolds with $\lambda_{1,p}$ achieving its maximum value.

Received 24 June 2018

Accepted 9 August 2019

Published 29 November 2022