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OpenStudy (anonymous):
Let A = {a,b,c,d}. Give an example of a relation R on A^2 which is reflexive, symmetric, but not transitive. I'm confused on how to get this A^2 and the overall meaning of the question. Is A^2 the cartesian product of A x A? As in A^2 = {(a,a), (a,b), (a,c), (a,d),(b,a), (b,b).... etc} ?
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