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# Let s be the relation on the set of integers such that xsy if and only if x2 ≡2 y2. in other words, s = { (x, y) ∈ \mathbb{z}z × \mathbb{z}z | x2 ≡2 y2 }. show that s is an equivalence relation. what are the equivalence classes of s?   ### Another question on Mathematics Mathematics, 05.02.2019 02:17
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Let s be the relation on the set of integers such that xsy if and only if x2 ≡2 y2. in other words,...
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