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Proceedings Of The Royal Society Of Edinburgh, Section A: Mathematics


We are concerned with the solvability of nonlinear second-order elliptic partial differential equations with nonlinear boundary conditions. We study the generalized Steklov-Robin eigenproblem (with possibly singular weights) in which the spectral parameter is both in the differential equation and on the boundary. We prove the existence of solutions for nonlinear problems when both nonlinearities in the differential equation and on the boundary interact, in some sense, with the generalized spectrum. The proofs are based on variational methods and a priori estimates.


This work is freely available courtesy of Cambridge University Press and The Royal Society of Edinburgh.
©2012 The Royal Society of Edinburgh
First published online January 30, 2012:

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