Kernels and Excessive Functions. Kernels. Excessive Functions with Respect to a Kernel. Excessive Measures and Sweeping. Complementary Results. Theory of Reductions and Sweeping. Gambling Houses, Reductions. Sweeping Defined by a Convex Cone of Continuous Functions. Convex Compact Sets. New Methods in Capacity Theory: Applications to Gambling Houses (Appendix). Multicapacities. Capacitary and Analytic Operators. Application to Gambling Houses. Various Applications and Complements. Semigroups and Resolvents. The Fundamental Definitions. Elements of Potential Theory. Ergodic Theory for a Resolvent. Resolvents in Duality. Compactification Methods. Construction of Resolvents and Semigroups. The Hille-Yosida Theory. Applications to Hunt's Theorem. Some Examples. Some Remarks on Energy. Commentaries and Historical Notes. Bibliography. Index.