This reputable translation covers trigonometric Fourier series, orthogonal systems, double Fourier series, Bessel functions, the Eigenfunction method and its applications to mathematical physics, operations on Fourier series, and much more. Over 100 problems at ends of chapters. Answers in back of book. 1962 edition.
These Dover mathematics books can be really hit or miss. I found this one clear and relatively accessible for someone without such a solid math background (natural scientist with some college calculus).
The Fourier Series is a family of a series of infinite trigonometric functions. This book does an excellent job at explaining the mathematics behind this important topic. With most math books, there is a large amount of assumed knowledge, leaving the book largely unreadable to the “common joe.” While this is in no way a book for the ordinary person, anyone with a sound knowledge of calculus and a rough understanding of real analysis will be able to comprehend and enjoy this book. With every new topic there are a plethora of insightful examples to help reinforce the topic. My major complaint is that the proofs are rather free hand. The author whimsically interchanges derivatives, summations, and integrals without explaining why this is correct. In addition, a lot of the proofs leave out a large amount of steps, or merely deem the result as trivial. This is one of the books my professor calls a “read with notepad ready book.” This is because to fully understand the material, one must also work out the solutions on their own. Near the end of the book is where the applications appear. Fourier series are used to describe wave natures and heat transfer. The examples are insightful and show how truly important this mathematical concept is. The intentions of this book are to explain the theory and applications of the Fourier Series. If the following phrases “absolutely integrable over a closed and bounded interval,” “necessary and sufficient condition for pointwise continuity,” and “jump discontinuities” made anyone’s inner math nerd crave more information, then to those people I would recommend this book.
Itiraf ediyom (A Confession): "Yazarinin soyadi Tolstoy'unki gibi ya. :|" diye aldim bu kitabi. Tercih yaparken muhakeme zayif duserse boyle antin kuntin kistaslara meylediyo iste insan.