n-Excisive functors, canonical connections, and line bundles on the Ran space

Abstract Let X be a smooth algebraic variety over k. We prove that any flat quasicoherent sheaf on $${\text {Ran}}(X)$$ Ran ( X ) canonically acquires a $$\mathscr {D}$$ D -module structure. In addition, we prove that, if the geometric fiber $$X_{\overline{k}}$$ X k ¯ is connected and admits a smoot...

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Main Author: Tao, James (Author)
Format: Article
Language:English
Published: Springer International Publishing, 2021-09-20T17:30:22Z.
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Online Access:Get fulltext
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100 1 0 |a Tao, James  |e author 
245 0 0 |a n-Excisive functors, canonical connections, and line bundles on the Ran space 
260 |b Springer International Publishing,   |c 2021-09-20T17:30:22Z. 
856 |z Get fulltext  |u https://hdl.handle.net/1721.1/131813 
520 |a Abstract Let X be a smooth algebraic variety over k. We prove that any flat quasicoherent sheaf on $${\text {Ran}}(X)$$ Ran ( X ) canonically acquires a $$\mathscr {D}$$ D -module structure. In addition, we prove that, if the geometric fiber $$X_{\overline{k}}$$ X k ¯ is connected and admits a smooth compactification, then any line bundle on $$S \times {\text {Ran}}(X)$$ S × Ran ( X ) is pulled back from S, for any locally Noetherian k-scheme S. Both theorems rely on a family of results which state that the (partial) limit of an n-excisive functor defined on the category of pointed finite sets is trivial. 
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655 7 |a Article