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Unformatted text preview: PART B: SETS OF NUMBERS A set is a collection of objects, called the elements or members of the set. Two sets are equal when they consist of the same elements. Typically, order is irrelevant, and elements are not repeated. denotes the empty set , or null set , the set consisting of no elements. Let A and B be sets. A is a subset of B , denoted by A B , when every element of A is also an element of B . If A B , but A B , then A is a proper subset of B , denoted by A B . This means that B contains all of the elements of A , as well as at least one other element not in A ....
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 Spring '09
 Real Numbers, Sets

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