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arXiv · 2411.10757

Cheng-Yau logarithmic gradient estimates for a nonlinear elliptic equation on smooth metric measure spaces

Cheng Jin·Youde Wang·Fanqi Zeng
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Abstract

In this paper, we consider the nonlinear elliptic equation $$\Delta_fv^\tau+\lambda v=0$$ on a complete smooth metric measure space with $m$-Bakry-\'{E}mery Ricci curvature bounded from below, where $\tau>0$ and $\lambda$ are constant. We obtain some new local gradient estimates for positive solutions to the equation using the Nash-Moser iteration technique. As applications of these estimates, we obtain a Liouville type theorem and a Harnack inequality, and the global gradient estimates for such solutions. Our results generalize and improve the estimates in Wang (J. Differential Equations 260:567-585, 2016) and Zhao (Arch. Math. (Basel) 114:457-469, 2020).

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Cheng Jin, Youde Wang, Fanqi Zeng. 2024-11-16. Cheng-Yau logarithmic gradient estimates for a nonlinear elliptic equation on smooth metric measure spaces. https://arxiv.org/abs/2411.10757

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