equivalence relation(redirected from Equivalence relations)
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Related to Equivalence relations: Equivalence classes
A reflexive, symmetric, and transitive relationship between elements of a set, such as congruence for the set of all triangles in a plane.
(Logic) logic maths a relation that is reflexive, symmetric, and transitive: it imposes a partition on its domain of definition so that two elements belong to the same subset if and only if the relation holds between them