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Mathematics > Algebraic Geometry

Title: Coherent-Constructible Correspondence for Toric Fibrations

Abstract: Let $\Sigma$ be a fan inside the lattice $\mathbb{Z}^n$, and $\mathcal{E}:\mathbb{Z}^n \rightarrow \operatorname{Pic}{S}$ be a map of abelian groups. We introduce the notion of a principal toric fibration $\mathcal{X}_{\Sigma, \mathcal{E}}$ over the base scheme $S$, relativizing the usual toric construction for $\Sigma$. We show that the category of ind-coherent sheaves on such a fibration is equivalent to the global section of the Kashiwara-Schapira stack twisted by a certain local system of categories with stalk $\operatorname{Ind}\operatorname{Coh} S$. It is a simultaneous generalization of the work of Harder-Katzarkov [HK19] and of Kuwagaki [Kuw20], and should be seen as a family-version of the coherent-constructible correspondence [FLTZ11].
Comments: 34 pages, 8 figures
Subjects: Algebraic Geometry (math.AG); Algebraic Topology (math.AT); Symplectic Geometry (math.SG)
Cite as: arXiv:2304.00832 [math.AG]
  (or arXiv:2304.00832v1 [math.AG] for this version)

Submission history

From: Yuxuan Hu [view email]
[v1] Mon, 3 Apr 2023 09:20:13 GMT (447kb,D)

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