Sobre uma classe de problemas singulares com termo de convecção e expoentes Ilimitados

Abstract

In this work, we study the existence of a solution for a class of Dirichlet problems with a singularity and a convection term. More precisely, we study the existence of a positive solution to the Dirichlet problem $$-\Delta_p u = \frac{\lambda}{u^{\alpha}} + f(x,u,\nabla u)$$ in a bounded, smooth domain $\Omega$. The convection term has exponents with no upper limitations neither in $u$ nor in $\nabla u$. This is somewhat unexpected and rare. So, we address a range of problems not yet contained in the literature.

The solution of the problems combines the definition of an auxiliary problem, the method of sub- and super-solution, Schauder's fixed point theorem and Galerkin method.