# Calculate an equivalence relation by a given partition in Wolfram|Alpha?

Posted 2 months ago
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 Given a set of equivalence classes, e.g: { {a, b}, {c}, {d} }, is there a way to use WolframAlpha to get its corresponding equivalence relation, and vice versa?
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Posted 2 months ago
 It is not really clear what sort of output is expected here.
 As an equivalence relation on a set is a particular kind of (binary) relation, and in general a relation in a set is a set of ordered pairs, I would expect for output:  { {a, a}, {a, b}, {b, a}, {b, b}, {c, c}, {d, d} }