(1) prove that the relation is an equivalence
Chapter 8, Problem 30E(choose chapter or problem)
Problem 30E
(1) prove that the relation is an equivalence relation, and (2) describe the distinct equivalence classes of each relation.
Exercise
Define Q on the set R × R as follows: For all (w, x), (y, z) ∈ R × R,
(w, x) Q (y, z) ⇔ x = z.
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