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Bartosz Milewski /
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2025-02-22 13:40:02

Bartosz Milewski on Nostr: It's possible to define a "proportional product" of two objects using copowers. Given ...

It's possible to define a "proportional product" of two objects using copowers. Given two sets \(A\) and \(B\) we can define \(A \cdot a \times B \cdot b\)
\[ C(A \cdot a \times B \cdot b, c) \cong Set (A, C(a, c)) \times Set(B, C(b, c)\]

I thought of this trying to work out a category theory of French sauces. You need such a product when you mix ingredients in different proportions. I think of a sauce as a functor.
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