Let R be the relation defined in Example 8.3.12.
To prove that R is reflexive.
Let R be the relation on a set A, the set of all ordered pairs of integers for which the second element of the pair is nonzero.
Define a relation R on A as follows: For all
To prove that R is symmetric..
To list four distinct elements in [(1, 3)].
To list four distinct elements in [(2, 5)].
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