EMS Textbooks in Mathematics 2007; 303 pp; hardcover Volume: 4 ISBN10: 3037190426 ISBN13: 9783037190425 List Price: US$68 Member Price: US$54.40 Order Code: EMSTEXT/4
 It is the main aim of this book to develop at an accessible, moderate level an \(L_2\) theory for elliptic differential operators of second order on bounded smooth domains in Euclidean nspace, including a priori estimates for boundaryvalue problems in terms of (fractional) Sobolev spaces on domains and on their boundaries, together with a related spectral theory. The presentation is preceded by an introduction to the classical theory for the LaplacePoisson equation, and some chapters provide required ingredients such as the theory of distributions, Sobolev spaces and the spectral theory in Hilbert spaces. The book grew out of twosemester courses the authors have given several times over a period of ten years at the Friedrich Schiller University of Jena. It is addressed to graduate students and mathematicians who have a working knowledge of calculus, measure theory and the basic elements of functional analysis (as usually covered by undergraduate courses) and who are seeking an accessible introduction to some aspects of the theory of function spaces and its applications to elliptic equations. A publication of the European Mathematical Society (EMS). Distributed within the Americas by the American Mathematical Society. Readership Graduate students and research mathematicians interested in differential equations and analysis. Table of Contents  The LaplacePoisson equation
 Distributions
 Sobolev space on \(\mathbb{R}^n\) and \(\mathbb{R}^n_+\)
 Sobolev spaces on domains
 Elliptic operators in \(L_2\)
 Spectral theory in Hilbert spaces and Banach spaces
 Compact embeddings, spectral theory of elliptic operators
 A. Domains, basic spaces, and integral formulae
 B. Orthonormal bases of trigonometric functions
 C. Operator theory
 D. Some integral inequalities
 E. Function spaces
 Selected solutions
 Bibliography
 Author index
 List of figures
 Notation index
 Subject index
