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Boundary value problems with measures for elliptic equations with singular potentials
Laurent Veron 1, Cecilia Yarur 2
(11/07/2010)

We study the boundary value problem with Radon measures for nonnegative solutions of $L_Vu:=-\Delta u+Vu=0$ in a bounded smooth domain $\Gw$, when $V$ is a locally bounded nonnegative function. Introducing some specific capacity, we give sufficient conditions on a Radon measure $\gm$ on $\prt\Gw$ so that the problem can be solved. We study the reduced measure associated to this equation as well as the boundary trace of positive solutions. In the appendix A. Ancona solves a question raised by M. Marcus and L. Véron concerning the vanishing set of the Poisson kernel of $L_V$ for an important class of potentials $V$.
1 :  Laboratoire de Mathématiques et Physique Théorique (LMPT)
CNRS : UMR6083 – Université François Rabelais - Tours
2 :  Departamento de Matematicas y CC (Departamento de Matematicas y CC)
Universidad de Santiago de Chile
Mathématiques/Equations aux dérivées partielles
Laplacian – Poisson potential – Capacities – Singularities – Borel measures – Harnack inequalities
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