Existência e Blow-up de soluções para um problema de valor de fronteira nãolinear bidimensional

Abstract

In this work we prove results of existence, multiplicity and blow-up solutions for a boundary value problem originated Corrosion Modeling and involving a parameter > 0. We obtain the existence of an infinity of solutions of the problem using the so-called theory of Lyusternik-Schnirelman, and ideas due to S.I. Pohozaev and A. Bahri. The basis of our analysis of limite behavior, Blow-up, is a uniform estimate @v @n in L1(@ ) where v is the solution for the parameter , combined with an adaptation of techniques developed by Brezis and Merle. Precisely, we prove that when ! 0+ our solutions, from to a subsequence, develops a finite number of singularities on @