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

6 votes
3 answers
1k views

Free Objects in Functor Categories

As a bit of background, consider the category of all covariant, additive functors from a small Abelian category $C$ to Abelian groups, which I'll denote $[C,Ab]$. First, $[C,Ab]$ is an Abelian catego …
Brian Hepler's user avatar
5 votes

How to visualize the Microsupport of a Sheaf?

This might be too late, or out-of-date for you, but I've always understood the microsupport best in terms of Morse theory (or microlocal Morse theory, or the stratified Morse theory of Goresky-MacPher …
Brian Hepler's user avatar