Table of contents : Cover Title Copyright Dedication Acknowledgment Preface to the Second Edition Preface to the First Edition Contents List of Frequently Used Symbols PART I Basic Linear Theory CHAPTER I Ill-Posed Problems A. Some Examples B. Lewy's Example CHAPTER 2 Characteristics and Initial-Value Problems CHAPTER 3 The One-Dimensional Wave Equation CHAPTFR 4 Uniqueness and Energy Integrals CHAPTER 5 Holmgrcn's Uniqueness Theorem CHAPTER 6 An Initial-Value Problem for a Hyperbolic Equation CHAPTER 7 Distribution Theory A. A Cursory View B. Fundamental Solutions C. Appendix CHAPTER 8 Second-Order Linear Elliptic Equations A. The Strong Maximum Principle B. A-Priori Estimates C. Existence of Solutions D. Elliptic Regularity CHAPTER 9 Second-Order Linear Parabolic Equations A. The Heat Equation B. Strong Maximum Principles PART II Reaction- Diffusion Equations CHAPTER 10 Comparison Theorems and Monotonicity Methods A. Comparison Theorems for Nonlinear Equations B. Upper and Lower Solutions C. Applications CHAPTER 11 Linearization A. Spectral Theory for Self-Adjoint Operators B. Linearized Stability C. Appendix: The Krein-Rutman Theorem CHAPTER 12 Topological Methods A. Degree Theory in Rn B. The Leray Schauder Degree C. An Introduction to Morse Theory D. A Rapid Course in Topology CHAPTER 13 Bifurcation Theory A. The Implicit Function Theorem B. Stability of Bifurcating Solutions C. Some General Bifurcation Theorems D. Spontaneous Bifurcation; An Example CHAPTER 14 Systems of Reaction-Diffusion Equations A. Local Existence of Solutions B. Invariant Regions C. A Comparison Theorem D. Decay to Spatially Homogeneous Solutions E. A Lyapunov Function for Contracting Rectangles F. Applications to the Equations of Mathematical Ecology PART III The Theory of Shock Waves CHAPTER 15 Discontinuous Solutions of Conservation Laws A. Discontinuous Solutions B. Weak Solutions of Conscrvation Laws C. Evolutionary Systems D. The Shock Inequalities E. Irreversibility CHAPTER 16 The Single Conservation Law A. Existence of an Entropy Solution B. Uniqueness of the Entropy Solution C. Asymptotic Behavior of the Entropy Solution D. The Riemann Problem for a Scalar Conservation Law CHAPTER 17 The Riemann Problem for Systems of Conservation Laws A. The p-System B. Shocks and Simple Waves C. Solution of the General Ricmann Problem CHAPTER 18 Applications to Gas Dynamics A. The Shock Inequalities B. The Ricmann Problem in Gas Dynamics C. Interaction of Shock Waves CHAPTER 19 The Glimm Difference Scheme A. The Interaction Estimate B. The Ditrcrcnce Approximation C. Convergence Chapter 20 Riemann Invariants, Entropy, and Uniqueness A. Riemann Invariants B. A Concept of Entropy C. Solutions with Big Data D. Instability of Rarefaction Shocks E. Oleinik's Uniqueness Theorem Chapter 21 Quasi-Linear Parabolic Systems A. Gradient Systems B. Artificial Viscosity C. Iscntropic Gas Dynamics PART IV The Conley Index CHAPTER 22 The Conley Index A. An Impressionistic Overview B. Isolated Invariant Sets and Isolating Blocks C. The Homotopy Index CHAPTER 23 Index Pairs and the Continuation Theorem A. Morse Decompositions and Index Pairs B. The Conlcy Index of an Isolated Invariant Set C. Continuation D. Some Further Remarks CHAPTER 24 Travelling Waves A. The Structure of Weak Shock Waves B. The Structure of Magnetohydrodynamic Shock Waves C. Periodic Travelling Waves D. Stability of Steady-State Solutions E. Instability of Equilibrium Solutions of the Neumann Problem F. Appendix: A Criterion for Nondegeneracy CHAPTER 25 Recent Results Section I. Reaction-Diffusion Equations A. Stability of the Fitz-Hugh-Nagumo Travelling Pulse B. Symmetry-Breaking C. A Bifurcation Theorem D. Equivariant Conley Index E. Application to Scmilincar Elliptic Equations Concluding Remarks Section II. Theory of Shock Waves A. Compensated Compactness B. Stability of Shock Waves C. Miscellaneous Results Section III. Conley Index Theory A. The Connection Index B. Conley's Connection Matrix C. Miscellaneous Results Section IV. Stability of Travelling Waves-A Topological Approach A. Introduction B. The Search for 6,(L) C. Applications to Fast-Slow Systems References Bibliography Author Index Subject Index