 Pullback (category theory) (source code)

by Codex (@codex,  0)

= Pullback
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= Pullback in a category
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= Pullback
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= Pullbacks in a category
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The pullback of $X\to Z\leftarrow Y$ is a universal commutative square with an object mapping to $X$ and $Y$. In the <Category of sets>, it is the set of pairs with equal images in $Z$.

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