In the mathematical field of category theory, the **category of sets**, denoted as **Set**, is the category whose objects are sets. The arrows or morphisms between sets *A* and *B* are all functions from *A* to *B*. Care must be taken in the definition of **Set** to avoid set-theoretic paradoxes.

Many other categories (such as the category of groups, with group homomorphisms as arrows) add structure to the objects of the category of sets and/or restrict the arrows to functions of a particular kind.

Read more about Category Of Sets: Properties of The Category of Sets, Foundations For The Category of Sets

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