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6
votes
0
answers
145
views
Can we make Pres *-autonomous?
The category $\mathbf{Sup}$ of sup-lattices (posets admitting all supremum and supremum preserving map between them) is a well known example of a $*$-autonomous category:
The internal Hom is simply t …
13
votes
1
answer
462
views
Is there any references on the tensor product of presentable (1-)categories?
Is there any references on the tensor product of (locally) presentable categories ?
All I know about this is Lurie's book that deals with the $\infty$-categorical version, and a few references that d …
1
vote
Bousfield localization of a left proper accessible model category
In combinatorial and accessible weak model categories (also on ArXiv) I've studied Bousfield localization of weak and semi-model categories in both the combinatorial and accessible case.
In particular …
5
votes
Accepted
Can conservativity depend on the universe?
Probably not the best one can do, and what follows might be a bit 'overkill', but it answer the question about dependency on universe, and it is a nice argument.
Also if you know how the proof of th …
7
votes
Compact objects in slice categories of finitely presentable categories
This is true. It is for example easy to see that the full subcategory of objects of this form is closed under all finite colimits*, dense and that these objects are all finitely presentable. I unfortu …
13
votes
Accepted
Tensor product of sites
The category $H$ can be described as the category of $E$-valued sheaves on $D$, or $F$-valued sheaves on $C$.
You get a site by taking the category $C \times D$ and taking the topology generated by th …