Except for minor modifications, this monograph represents the lecture notes of a course I gave at UCLA during the winter and spring quarters of 1991. My purpose in the course was to present the necessary background material and to show how ideas from the theory of Fourier integral operators can be useful for studying basic topics in classical analysis, such as oscillatory integrals and maximal functions. The link between the theory of Fourier integral operators and classical analysis is of cours

Preface
0. Background
0.1. Fourier Transform
0.2. Basic Real Variable Theory
0.3. Fractional Integration and Sobolev Embedding Theorems
0.4. Wave Front Sets and the Cotangent Bundle
0.5. Oscillatory Integrals
Notes
1. Stationary Phase
1.1. Stationary Phase Estimates
1.2. Fourier Transform of Surface-carried Measures
Notes
2. Non-homogeneous Oscillatory Integral Operators
2.1. Non-degenerate Oscillatory Integral Operators
2.2. Oscillatory Integral Operators Related to the Restriction Theorem
2.3. Riesz Means in R"
2.4. Kakeya Maximal Functions and Maximal Riesz Means in R2 Notes
3. Pseudo-differential Operators
3.1. Some Basics
3.2. Equivalence of Phase Functions
3.3. Self-adjoint Elliptic Pseudo-differential Operators on Compact Manifolds Notes
4. The Half-wave Operator and Functions of Pseudo-differential Operators
4.1. The Half-wave Operator
4.2. The Sharp Weyl Formula
4.3. Smooth Functions of Pseudo-differential Operators Notes
5. LP Estimates of Eigenfunctions
5.1. The Discrete L2 Restriction Theorem
5.2. Estimates for Riesz Means
5.3. More General Multiplier Theorems Notes
6. Fourier Integral Operators
6.1. Lagrangian Distributions
6.2. Regularity Properties
6.3. Spherical Maximal Theorems: Take 1
Notes
7. Local Smoothing of Fourier Integral Operators
7.1. Local Smoothing in Two Dimensions and Variable Coefficient Kakeya Maximal Theorems
7.2. Local Smoothing in Higher Dimensions
7.3. Spherical Maximal Theorems Revisited
Notes
Appendix: Lagrangian Subspaces of T*IRn
Bibliography
Index
Index of Notation