Generalization of the Keller-Osserman theorem for higher order differential inequalities

Abstract

We obtain exact conditions guaranteeing that any global weak solution of the differential inequality $$ \sum_{|α| = m} \partial^α a_α(x, u) \ge g (|u|) \quad \mbox{in } {\mathbb R}^n $$ is trivial, where $m,n\ge 1$ are integers and $a_{\alpha }$ and $g$ are some functions. These conditions generalize the well-know Keller-Osserman condition.