Products, Homotopy Limits and Applications

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Hogadi, Amit
Xu, Chenyang
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Abstract
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In this note, we discuss the derived functors of infinite products and homotopy limits. $QC(X)$, the category of quasi-coherent sheaves on a Deligne-Mumford stack $X$, usually has the property that the derived functors of product vanish after a finite stage. We use this fact to study the convergence of certain homotopy limits and apply it compare the derived category of $QC(X)$ with certain other closely related triangulated categories.
Comment: 13 pages
Keywords
Mathematics - Category Theory, Mathematics - Algebraic Geometry, 18E30, 14A20
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