Recitation4 - Recitation 4 Definitions x is an element of A x is not an element of A A is a subset of B iff every element of A is in B the empty set is

Recitation4 - Recitation 4 Definitions x is an element of A...

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Recitation 4 Definitions x is an element of A x is not an element of A A is a subset of B iff every element of A is in B the empty set is always an element the set is a subset of itself A is a proper subset of B if there is an element of B that is not in A the power set of A which is the set of all subsets of A Example Problems Answer True or False { } True False True since every element in C is in A True since there are elements in A that aren’t in C False Set Operators elements in A or B (can be in either) element in A and B (have to be in both)
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Examples on Sets = {1,2,3,4,5,6,7} = {1} Review Problem 13 on HW Problem 17 Chapter 1.7 Show that if
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