Excerpt - Front Matter: "Preface The purpose of this book is to help students understand and use the calculus. Everything has been aimed toward making this easier"
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Excerpt - page 107: "Infrared approximations No book on Green's functions can omit a discussion, however brief, on the sub- ject of Infrared (IR)/no-recoil/BlockNordsieck ... "
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Excerpt - page 0: "CHAPTER I THE CONCEPT OF A GREEN'S FUNCTION Boundary value problems are an almost inevitable consequence of using mathematics to study problems arising in the real world"
Excerpt - page 53: "GREEN'S FUNCTIONS (INTUITIVE IDEAS) 1. INTRODUCTION AND GENERAL COMMENTS For the limited purpose of this section we shall look mainly at steady heat flow in a homogeneous ... "