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Wrapped sheaves

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abstract

We construct a sheaf-theoretic analogue of the wrapped Fukaya category in Lagrangian Floer theory, by localizing a category of sheaves microsupported away from some given $\Lambda \subset S^*M$ along continuation maps constructed using the Guillermou-Kashiwara-Schapira sheaf quantization. When $\Lambda$ is a subanalytic singular isotropic, we also construct a comparison map to the category of compact objects in the category of unbounded sheaves microsupported in $\Lambda$, and show that it is an equivalence. The last statement can be seen as a sheaf theoretical incarnation of the sheaf-Fukaya comparison theorem of Ganatra-Pardon-Shende.

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math.AG 1

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2024 1

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ACCEPT 1

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Line Bundle Resolutions via the Coherent-Constructible Correspondence

math.AG · 2024-11-26 · accept · novelty 6.0

On smooth projective toric varieties, every coherent sheaf has a minimal line bundle resolution of length at most the dimension, and for toric subvarieties the Betti numbers are compactly supported cohomology groups of mirror-torus strata.

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  • Line Bundle Resolutions via the Coherent-Constructible Correspondence math.AG · 2024-11-26 · accept · none · ref 13 · internal anchor

    On smooth projective toric varieties, every coherent sheaf has a minimal line bundle resolution of length at most the dimension, and for toric subvarieties the Betti numbers are compactly supported cohomology groups of mirror-torus strata.