伴随函子 Adjoint functors

（重定向自Left adjoint）

在范畴论中，函子 $F, G$ 若满足 $\mathrm{Hom}(F(-),-) = \mathrm{Hom}(-,G(-))$ ，则称之为一对伴随函子，其中 $G$ 称为 $F$ 的右伴随函子，而 $F$ 是 $G$ 的左伴随函子。伴随函子在范畴论中是个极基本而有用的概念。

单词	Left adjoint
释义	Left adjoint 中文百科伴随函子 Adjoint functors （重定向自Left adjoint）在范畴论中，函子 $F, G$ 若满足 $\mathrm{Hom}(F(-),-) = \mathrm{Hom}(-,G(-))$ ，则称之为一对伴随函子，其中 $G$ 称为 $F$ 的右伴随函子，而 $F$ 是 $G$ 的左伴随函子。伴随函子在范畴论中是个极基本而有用的概念。英语百科 Adjoint functors 伴随函子（重定向自Left adjoint） In mathematics, specifically category theory, adjunction is a possible relationship between two functors. Adjunction is ubiquitous in mathematics, as it specifies intuitive notions of optimization and efficiency. In the most concise symmetric definition, an adjunction between categories C and D is a pair of functors,
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Left adjoint

伴随函子 Adjoint functors

Adjoint functors 伴随函子