Special Session 31: Regularity of partial differential equations

Liouville-type theorems and existence of solutions for quasilinear elliptic equations with nonlinear gradient terms

Zhengce Zhang
Xi`an Jiaotong University
Peoples Rep of China
Co-Author(s):    Caihong Chang, Bei Hu
Abstract:
In this talk, we consider two properties of positive weak solutions of quasilinear elliptic equations, $-\Delta_{m}u=u^q|\nabla u|^p\ \mathrm{in}\ \mathbb{R}^N$, with nonlinear gradient terms. First, we show a Liouville-type theorem for positive weak solutions of the equation involving the $m$-Laplacian operator. The technique of Bernstein gradient estimates is ultilized to study the case $p