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Search options questions only not deleted user 26470
17 votes
2 answers
1k views

Is the site of (smooth) manifolds hypercomplete?

By site of manifolds Man, I mean the category of manifolds (maybe submanifolds to obtain a small category) with continuous maps between them. A Grothendieck topology is given by open covers. Actually, …
Alexander Körschgen's user avatar
10 votes
2 answers
857 views

Left Kan extension along Yoneda of pullback-preserving functor preserving pullbacks

Let $F\colon C \to D$ be a functor. The Kan Extension of $y_D \circ F$ along $y_C$ yields a functor $F_!: Fun(C^{op},Set) \to Fun(D^{op},Set)$. Here, $y_C$ and $y_D$ denotes the respective Yoneda embe …
Alexander Körschgen's user avatar
5 votes
2 answers
756 views

Is an ∞-topos of local homotopy dimension $\leq n$ of homotopy dimension $\leq n$?

[All references are wrt to Lurie's "Higher Topos Theory" in its latest online available version (March 10, 2012)] Definition 7.2.1.8: An ∞-topos $X$ is locally of homotopy dimension $\leq n$ if there …
Alexander Körschgen's user avatar