The aim of this book is to give an elementary treatment of multiple integrals. The notions of integrals extended over a curve, a plane region, a surface and a solid are introduced in tum, and methods for evaluating these integrals are presented in detail. Especial reference is made to the results required in Physics and other mathematical sciences, in which multiple integrals are an indispensable tool. A full theoretical discussion of this topic would involve deep problems of analysis and topology, which are outside the scope of this volume, and concessions had to be made in respect of...

THE purpose of this book is to prescnt a straightforward introduction to complex numbers and their properties. Complex numbers, like other kinds of numbers, are essen- tially objects with which to perform calculations a: cording to certain rules, and when this principle is borne in mind, the nature of complex numbers is no more mysterious than that of the more familiar types of numbers. This formal approach has recently been recommended in a Reportt prepared for the Mathematical Association. We believe that it has distinct advantages in teaching and that it is more in line with modern...

Die elementaren Operationen in der Arithmetik bestehen darin, daB man zwei ZaWen a und b in Ubereinstimmung mit einigen wohldefinierten Regeln verkniipft und so eine neue eindeutig bestimmte zaW c erMlt. Nehmen wir zum Beispiel als Verkniipfungsregel die Multiplikation, so schreiben wir c = ab. Wenn a und b gegeben sind, dann kann die zaW c in jedem Fall gefunden werden. Es ist bekannt, daB die Multiplikation von zwei oder mehreren Zahlen gewissen for malen Regeln gehorcht, welche fur aile Produkte gelten, unabhiingig yom spezieilen nume rischen Wert: (Ll) ab = ba; Kommutativgesetz (1. 2)...