CS 2305 Lecture Notes - Lecture 9: Xcb, Tuple, Ab3
5 Oct 2018
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Sets an unordered collection of objects the students in this class set of puppies from a puppy store. An element of a set is called elementinenberlobject of the set. Rostermethod set a b c s ab c z set ofvowels v a e i o u. 2 l o l set of all integers 51 set of natural s n. 0 12,3 s c set of complex as z set builder s. X e 2 1 x isodd x clo such that. U universal set that contains everything currently under consideration has onemember butholdsnothing. 3 members 2 ofwhich aresets set equality tix x ca. To show a is a subset of b you need to show tx xca. Pca the set of all subsets of set a xcb. Ipca i 2 a ab3 a b b b a b. Relation is a subset r of cartesian product of axb is called a relation from the seta to the setb.
