We consider, in this paper, the following nonlinear equation with variable exponents:where a, b > 0 are constants and the exponents of nonlinearity m, p, and r are given functions. We prove a finite-time blow-up result for the solutions with negative initial energy and for certain solutions with positive energy.
KEYWORDS
blowup, nonlinear damping, Sobolev spaces with variable exponentsA > 0, 0 < < 1. The term Δ r(·) u = div(|∇u| r(·)−2 ∇u) is called r(·)− Laplacian.
The aim of this paper is to give an overview of results related to nonlinear wave equations during the last half century. In this regard, we present results concerning existence, decay and blow up for classical nonlinear equations. After that, we discuss briefly some important results of the variable-exponent Lebesgue and Sobolev spaces. Results related to nonexistence and blow up for wave equations with non-standard nonlinearities (nonlinearities involving variable exponents) are given in more detail. Finally, we present some recent decay and blow up results together with their proofs.
Mathematics Subject Classification
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.