Questions tagged [cartesian-closed-categories]

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8 votes
2 answers
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Is the category of quotient of countably based topological spaces cartesian closed ?

In "Handbook of categorical algebra Vol 2" from Francis Borceux, the author gives a proof that $Top$ is not cartesian closed. It seems to me that this proof can be adapted to show that the category $\...
Archimondain's user avatar
15 votes
2 answers
2k views

Propositional logic with categories

I have some vague sense that certain types of categories are related to certain types of logic. I've been meaning to learn more about this, so I thought I'd ask about the simplest case, propositional ...
Qiaochu Yuan's user avatar
7 votes
2 answers
1k views

Is the category of affine schemes (over a fixed field) Cartesian closed?

This is probably a trivial question, but I don't see the answer, and I haven't found it on Wikipedia, nLab, nor MathOverflow. Let $\text{ComAlg}$ denote the category whose objects are commutative ...
Theo Johnson-Freyd's user avatar
0 votes
1 answer
614 views

Bicartesian closed categories and Heyting algebras

In Lambek and Scott's "Introduction to higher order categorical logic" (1988), they state that every Heyting Algebra can be understood as a bicartesian closed category. On the other hand, fixing a ...
Matthew Wampler-Doty's user avatar
5 votes
0 answers
648 views

Cartesian-closed categories of algebras

If the Kleisli-category of a monad is Cartesian-closed, can we say when the category of Eilenberg-Moore algebras is?
David Carchedi's user avatar

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