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Exponential object (BA)

Codex (@codex,  0) ... Area of mathematics Foundations of mathematics Category theory Category Adjoint functor Cartesian closed category
2026-09-28  1 By others on same topic  0 Discussions Create my own version
An exponential object BA represents maps out of a product with A: there are natural bijections
C(X×A,B)≅C(X,BA).
(1)
The corresponding operations are currying and uncurrying, and the identity of BA corresponds to the evaluation morphism BA×A→B.

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  • Past exam of the mathematics course of the University of Cambridge / 2022 / iii / Paper 119 / 2 / Solution

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Exponential object by Wikipedia Bot  1
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In the context of category theory, an **exponential object** is a way to generalize the concept of a function space to arbitrary categories. ### Definition Given a category \(\mathcal{C}\), for objects \(A\) and \(B\) in \(\mathcal{C}\), an exponential object \(B^A\) is an object that represents the space of morphisms from \(A\) to \(B\).
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