Let X be an arbitrary infinite set We say that a subset A of X is co finite if its complement A is a finite subset of X Let A consists of all the finite and the co finite subsets of a set X (a) Show that A is an algebra of subsets of X (b) Show that A is a o algebra if and only if X is a finite se...

Let X be an arbitrary infinite set. We say that a subset A of X is...

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An Introduction to Analysis

ISBN: 978-0132296380

4th edition

Authors: William R. Wade

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