<*mathematics*> A relation R on a set including elements a, b,
c, which is reflexive (a R a), symmetric (a R b => b R a) and
transitive (a R b R c => a R c). An equivalence relation
defines an equivalence class.

See also partial equivalence relation.

Last updated: 1996-05-13

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**Nearby terms:**
equivalence class « equivalence class partitioning « equivalence partitioning « **equivalence relation** » equivalent isotropically radiated power » ER » er

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Copyright Denis Howe 1985