TY - JOUR AU1 - Qian, Bin AB - Let $${(M^n,g)}$$ ( M n , g ) be an n-dimensional complete Riemannian manifold. We consider Yau’s gradient estimates for positive solutions to the following nonlinear equation $$\Delta u + au {\rm log} u=0$$ Δ u + a u log u = 0 where a is a constant. As an application, we obtain the Liouville property for this equation in the case of a < 0. In addition, we illustrate, by giving concrete examples, that our results are sharp. TI - Yau’s gradient estimates for a nonlinear elliptic equation JF - Archiv der Mathematik DO - 10.1007/s00013-016-0983-2 DA - 2016-10-19 UR - https://www.deepdyve.com/lp/springer-journals/yau-s-gradient-estimates-for-a-nonlinear-elliptic-equation-NlHm0p5b0u SP - 427 EP - 435 VL - 108 IS - 4 DP - DeepDyve ER -