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Product category

"Product of categories" redirects here. For the operation on objects of a category, see Product (category theory).

In the mathematical field of category theory, the product of two categories C and D, denoted C × D and called a product category, is an extension of the concept of the Cartesian product of two sets. Product categories are used to define bifunctors and multifunctors.[1]

  1. ^ Mac Lane 1978, p. 37.

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