Adjoint functors

The existence of many pairs of adjoint functors is a major observation of the branch of mathematics known as category theory. Like much of category theory, the general notion of adjoint functors arises at an abstract level beyond the everyday usage of mathematicians.

Related Topics:
Mathematics - Category theory

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Adjoint functors can be considered from several different points of view. This article starts with a number of introductory sections considering some of these.

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