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In category theory, equivalence of categories is a fundamental concept that captures the idea of two categories being "essentially the same" in a categorical sense. Two categories \( \mathcal{C} \) and \( \mathcal{D} \) are said to be equivalent if there exists a pair of functors between them that reflect a correspondence of their structural features, without necessarily being isomorphic.

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  1. Category theory
  2. Fields of abstract algebra
  3. Fields of mathematics
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