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 course not new, since one of the early goals of microlocal analysis was to provide variable coefficient versions of the Fourier transform. However, the primary goal of this subject was to develop tools for the study of partial differential equations and, to some extent, only recently have many classical analysts realized its utility in their subject.

本书是为学习数学分析课程的学生、从事数学分析教学与研究的读者而编写的。全书共分为七章，系统地把数学分析中的重要定理总结和归纳为微积分基本定理、微分中值定理、积分中值定理、积分关系定理、极限关系定理、闭区间上连续函数的性质定理、实数连续性（完备性）定理七类进行研究。 全书从定理的历史演变分析、定理的内容与证明分析、定理的几何意义与条件结论分析、定理间的相互关系分析、定理的应用分析、定理的推广分析等角度展开研究。

This is primarily a textbook on mathematical analysis forgraduate students in economics. While there are a large number ofexcellent textbooks on thiroad topic in the mathematicsliterature， most ofthese texts are overly advanced relative to theneeds of the vast majority of economics students and concentrate onvarious topics that are not readily helpful for studying economictheory. Moreover， it seems that most economics students lack thetime or courage to enroll in a math course at the graduatelevel. Sometimes this is not even for bad reasons， for only fewmath departments offer classes that are designed for the parhcularneeds of economists. Unfortunately，more often than not， theconsequent lack ofmathematical background cre-ates problems for thestudents at a later stage of their education， since an exceedinglylarge fraction ofeconomic theory is imperable without somerigorouackground in real analysis. The present text aims atproviding a remedy for this inconvenient situation.

《希尔伯特空间及其应用导论(第3版)(英文版)》无论是学生还是科研人员，都将从《希尔伯特空间及其应用导论(第3版)(英文版)》的特别表达中受益。《希尔伯特空间及其应用导论(第3版)(英文版)》在原来版本的基础上做了不少改动，新增加了一部分讲述Sobolev空间，展开讲述了有限维赋范空间，有关小波的一章做了全面更新。并且包括了积分和微分方程、量子力学、化、变分和控制问题、逼近理论问题、非线性不稳定性和分岔理论的多种应用。在众多希尔伯特空间的书中，《希尔伯特空间及其应用导论(第3版)(英文版)》在讲述勒贝格积分方面独具特色。学习泛函分析和希尔伯特理论的老师和学生都十分推崇这本书作为教材或者参考书。