Positive solutions of elliptic nonpositone problems
Positive solutions of elliptic nonpositone problems
We give conditions for the existence or nonexistence of positive solutions of second-order subcritical elliptic nonpositone problems.We do not assume that the problems are radial, nor that they satisfy a variational structure.Our chief tools are Degree Theory, a priori estimates, and Maximum Principle arguments.In this paper we are interested in …