A NOTE ON LIOUVILLE TYPE EQUATIONS ON GRAPHS

作者:Ge, Huabin*; Hua, Bobo; Jiang, Wenfeng
来源:PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, 2018, 146(11): 4837-4842.
DOI:10.1090/proc/14155

摘要

In this note, we study the Liouville equation Delta u = -e(u) on a graph G satisfying a certain isoperimetric inequality. Following the idea of W. Ding, we prove that there exists a uniform lower bound for the energy, Sigma(G)e(u) , of any solution u to the equation. In particular, for the 2-dimensional lattice graph Z(2) , the lower bound is given by 4.