This chapter on sets establishes the language of set theory in which this book on algebra is written. The elementary operations on sets such as subset, union, and intersection may well be familiar to the reader. In this case he should certainly move on to matters which are new. We suggest that this chapter first be read hurriedly to see what topics are familiar and what topics are new. The reader can then spend the time necessary to master whatever is new for him and can avoid spending time on material he knows.
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