This volume brings together five contributions to mathematical fluid mechanics, a classical but still very active research field which overlaps with physics and engineering. The contributions cover not only the classical Navier-Stokes equations for an incompressible Newtonian fluid, but also generalized Newtonian fluids, fluids interacting with particles and with solids, and stochastic models. The questions addressed in the lectures range from the basic problems of existence of weak and more regular solutions, the local regularity theory and analysis of potential singularities, qualitative and quantitative results about the behavior in special cases, asymptotic behavior, statistical properties and ergodicity.

This is the first book to present a model, based on rational mechanics of electrorheological fluids, that takes into account the complex interactions between the electromagnetic fields and the moving liquid. Several constitutive relations for the Cauchy stress tensor are discussed. The main part of the book is devoted to a mathematical investigation of a model possessing shear-dependent viscosities, proving the existence and uniqueness of weak and strong solutions for the steady and the unsteady case. The PDS systems investigated possess so-called non-standard growth conditions. Existence results for elliptic systems with non-standard growth conditions and with a nontrivial nonlinear r.h.s. and the first ever results for parabolic systems with a non-standard growth conditions are given for the first time. Written for advanced graduate students, as well as for researchers in the field, the discussion of both the modeling and the mathematics is self-contained.

This volume brings together four contributions to mathematical fluid mechanics, a classical but still highly active research field. The contributions cover not only the classical Navier-Stokes equations and Euler equations, but also some simplified models, and fluids interacting with elastic walls. The questions addressed in the lectures range from the basic problems of existence/blow-up of weak and more regular solutions, to modeling and aspects related to numerical methods. This book covers recent advances in several important areas of fluid mechanics. An output of the CIME Summer School "Progress in mathematical fluid mechanics" held in Cetraro in 2019, it offers a collection of lecture notes prepared by T. Buckmaster, (Princeton), S. Canic (UCB) P. Constantin (Princeton) and A. Kiselev (Duke). These notes will be a valuable asset for researchers and advanced graduate students in several aspects of mathematicsl fluid mechanics.

The field of variable exponent function spaces has witnessed an explosive growth in recent years. The standard reference article for basic properties is already 20 years old. Thus this self-contained monograph collecting all the basic properties of variable exponent Lebesgue and Sobolev spaces is timely and provides a much-needed accessible reference work utilizing consistent notation and terminology. Many results are also provided with new and improved proofs. The book also presents a number of applications to PDE and fluid dynamics.

Dieses Lehrbuch enthalt eine Einfuhrung in die nichtlineare Funktionalanalysis. Die Themenauswahl vermittelt grundlegende Methoden und Techniken, die bei der Untersuchung von nichtlinearen elliptischen und parabolischen partiellen Differentialgleichungen Anwendung finden. Es geht insbesondere auf Fixpunktsatze, Differentiation und Integration in Banachraumen, die Theorie monotoner Operatoren und den Abbildungsgrad ein. Der Darstellung des Stoffes liegt die gegenseitige Beeinflussung von Theorie und Anwendungen zugrunde. Kurze Einfuhrungen am Kapitelanfang, illustrative Beispiele sowie die detaillierte Herleitung von Ergebnissen erleichtern das Verstandnis. Eine Kurzzusammenfassung von wichtigen Resultaten aus der linearen Funktionalanalysis ist im Anhang zu finden und vervollstandigt den Inhalt. Das Buch richtet sich an Studierende mit abgeschlossener Grundausbildung in Analysis, linearer Algebra und linearer Funktionalanalysis und umfasst den Lehrstoff fur eine vierstundige einsemestrige Vorlesung. Fur die 2. Auflage wurde insbesondere das Hauptkapitel zu monotonen Operatoren wesentlich uberarbeitet. Es beinhaltet nun eine moderne Darstellung von Evolutionsproblemen mithilfe Bochner-pseudomonotoner Operatoren sowie eine in sich geschlossene Darstellung maximal monotoner Operatoren.