for each of the following relations,
determine whether the relation is
reflexive, symmetric, antisymmetric, or transitive
(1) R is the relation on Z+ where aRb if gcd(a,b)=1
(2) R is the relation on Z+ where xRy if x^3 + y^2 is even
請問這兩個要怎麼判斷呢?
謝謝
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