17.3 Sets in the Complex Plane
INTRODUCTION
In the preceding sections we examined some rudiments of the algebra and geometry of complex numbers. But we have barely scratched the surface of the subject known as complex analysis; the main thrust of our study lies ahead. Our goal in the sections and chapters that follow is to examine functions of a single complex variable z = x + iy and the calculus of these functions.
Before introducing the notion of a function of a complex variable, we need to state some essential definitions and terminology about sets in the complex plane.
Terminology
Before discussing the concept of functions of a complex ...
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