Initial-Boundary Value Problems and the Navier-Stokes Equations provides an introduction to the vast subject of initial and initial-boundary value problems for PDEs. Applications to parabolic and hyperbolic systems are emphasized in this text. The Navier-Stokes equations for compressible and incompressible flows are taken as an example to illustrate the results. Researchers and graduate students in applied mathematics and engineering will find Initial-Boundary Value Problems and the Navier-Stokes Equations invaluable. The subjects addressed in the book, such as the well-posedness of initial-boundary value problems, are of frequent interest when PDEs are used in modeling or when they are solved numerically. The book explains the principles of these subjects. The reader will learn what well-posedness or ill-posedness means and how it can be demonstrated for concrete problems. There are many new results, in particular on the Navier-Stokes equations. When the book was written, the main intent was to write a text on initial-boundary value problems that was accessible to a rather wide audience. Therefore, functional analytical prerequisites were kept to a minimum or were developed in the book. Boundary conditions are analyzed without first proving trace theorems, and similar simplications have been used throughout. The direct approach to the subject still gives a valuable introduction to an important area of applied analysis.

Table of Contents:
Preface to the Classics Edition Errata Introduction Chapter 1: The Navier-Stokes Equations Chapter 2: Constant-Coefficient Cauchy Problems Chapter 3: Linear Variable-Coefficient Cauchy Problems in 1D Chapter 4: A Nonlinear Example: Burgers’ Equations Chapter 5: Nonlinear Systems in One Space Dimension Chapter 6: The Cauchy Problem for Systems in Several Dimensions Chapter 7: Initial-Boundary Value Problems in One Space Dimension Chapter 8: Initial-Boundary Value Problems in Several Space Dimensions Chapter 9: The Incompressible Navier-Stokes Equations: The Spatially Periodic Case Chapter 10: The Incompressible Navier-Stokes Equations under Initial and Boundary Conditions Appendix 1: Notations and Results from Linear Algebra Appendix 2: Interpolation Appendix 3: Sobolev Inequalities Appendix 4: Application of the Arzela-Ascoil Theorem References Author Index Subject Index.