Pseudodifferential Operators and Spectral Theory
Date: 21 April 2011, 16:16
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This is the second edition of Shubin's classical book. It provides an introduction to the theory of pseudodifferential operators and Fourier integral operators from the very basics. The applications discussed include complex powers of elliptic operators, Hormander asymptotics of the spectral function and eigenvalues, and method of approximate spectral projection. Exercises and problems are included to help the reader master the essential techniques. This book is written for a wide audience of mathematicians, be they interested students or researchers. Table of Contents Chapter I. Foundations of PDO Theory 1 1. Oscillatory Integrals 1 2. Fourier Integral Operators (Preliminaries) 10 3. The Algebra of Pseudodifferential Operators and Their Symbols 16 4. Change of Variables and Pseudodifferential Operators on Manifolds 31 5. Hypoellipticity and Ellipticity 38 6. Theorems on Boundedness and Compactness of Pseudodifferential Operators 46 7. The Sobolev Spaces 52 8. The Fredholm Property, Index and Spectrum 65 Chapter II. Complex Powers of Elliptic Operators 77 9. Pseudodifferential Operators with Parameter. The Resolvent 77 10. Definition and Basic Properties of the Complex Powers of an Elliptic Operator 87 11. The Structure of the Complex Powers of an Elliptic Operator 94 12. Analytic Continuation of the Kernels of Complex Powers 102 13. The C-Function of an Elliptic Operator and Formal Asymptotic Behaviour of the Spectrum 112 14. The Tauberian Theorem of Ikehara 120 15. Asymptotic Behaviour of the Spectral Function and the Eigenvalues (Rough Theorem) 128 Chapter III. Asymptotic Behaviour of the Spectral Function 133 16. Formulation of the Hormander Theorem and Comments 133 17. Non-linear First Order Equations 134 18. The Action of a Pseudodifferential Operator on an Exponent 141 19. Phase Functions Defining the Class of Pseudodifferential Operators 147 20. The Operator exp(-itA) 150 21. Precise Formulation and Proof of the Hormander Theorem 156 22. The Laplace Operator on the Sphere 164 Chapter IV. Pseudodifferential Operators in IR^n 175 23. An Algebra of Pseudodifferential Operators in IR^n. 175 24. The Anti-Wick Symbol. Theorems on Boundedness and Compactness 186 25. Hypoellipticity and Parametrix. Sobolev Spaces. The Fredholm Property 193 26. Essential Self-Adjointness. Discreteness of the Spectrum 197 27. Trace and Trace Class Norm 202 28. The Approximate Spectral Projection 206 29. Operators with Parameter 215 30. Asymptotic Behaviour of the Eigenvalues 223 Appendix 1. Wave Fronts and Propagation of Singularities 229 Appendix 2. Quasiclassical Asymptotics of Eigenvalues 240 Appendix 3. Hilbert-Schmidt and Trace Class Operators 257 A Short Guide to the Literature 269 Bibliography 275 Index of Notation 285 Subject Index 287
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