Positive Solutions of p-th Yamabe Type Equations on Infinite Graphs

Abstract

Let $G=(V,E)$ be a connected infinite and locally finite weighted graph, $Δ_p$ be the $p$-th discrete graph Laplacian. In this paper, we consider the $p$-th Yamabe type equation $$-Δ_pu+h|u|^{p-2}u=gu^{α-1}$$ on $G$, where $h$ and $g$ are known, $2<α\leq p$. The prototype of this equation comes from the smooth Yamabe equation on an open manifold. We prove that the above equation has at least one positive solution on $G$.