Remarks on least energy solutions for quasilinear elliptic problems in .
In this paper we study the influence of the domain topology on the multiplicity of solutions to a semilinear Neumann problem. In particular, we show that the number of positive solutions is stable under small perturbations of the domain.
Under natural regularity assumptions on the data the powers of regular elliptic boundary value problems (e.b.v.p.) are shown to be higher order regular e.b.v.p.. This result is used in description of the domains of fractional powers of elliptic operators which information is in order important in regularity considerations for solutions of semilinear parabolic equations. Presented approach allows to avoid C∞-smoothness assumption on the data that is typical in many references.
Si dà una maggiorazione a priori in per le soluzioni di equazioni lineari ellittiche del secondo ordine...
Si dimostra resistenza e l'unicità della soluzione del problema , nel caso in cui è un aperto di non limitato, è un operatore variazionale ellittico del secondo ordine a coefficienti misurabili e limitati e appartiene a .