Stochastic Porous Media Equations Focusing on stochastic porous media equations this book places an emphasis on existence theorems asymptotic behavior and ergodic properties of the associated transition semigroup. Stochastic perturbations of the porous media equation have reviously been considered by physicists but rigorous mathematical existence results have only recently been found. The porous media equation models a number of different physical phenomena including the flow of an ideal gas and the diffusion of a compressible fluid through porous media and also thermal propagation in plasma and plasma radiation. Another important application is to a model of the standard self organized criticality process called the sand pile model or the Bak Tang Wiesenfeld model . The book will be of interest to PhD students and researchers in mathematics physics and biology. Foreword Preface Introduction Equations with Lipschitz nonlinearities Equations with maximal monotone nonlinearities Variational approach to stochastic porous media equations L1 based approach to existence theory for stochastic porous media equations The stochastic porous media equations in Rd Transition semigroups and ergodicity of invariant measures Kolmogorov equations A Two analytical inequalities Bibliography Glossary Translator’s note Index.