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Enriched categories, topoi, abelian categories, monoidal categories, homological algebra.

16 votes
1 answer
578 views

When is the category of models of a limit theory a topos?

If $\mathcal{E}$ is a Grothendieck topos on a small base, then it is locally presentable, and hence is equivalent to the category of models of some limit theory. Is there a characterization of limi …