Problem

(a) Suppose that R and S are equivalence relations on a set A. Prove that is an eq...

(a) Suppose that R and S are equivalence relations on a set A. Prove that is an equivalence relation on A.

(b) Let R be the relation of congruence modulo 3 and S be the relation of congruence modulo 4. Describe the equivalence relation on Z.

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Solutions For Problems in Chapter 3.2

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