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Chapter 9 Cardinality
Objectives
Compute the cardinality of a finite set.
Recognize when two sets have the same cardinality.
Recognize whether a set is infinite.
Compute the cardinality of Cartesian products.
Compute the number of subsets of a set.
In this chapter, we define the size (or cardinality) of a set. We use functions to help find cardinality, especially for infinite sets. We also find formulas for the cardinality of Cartesian products and the number of subsets of a set.
