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arXiv · 2012.01324

On the Brauer groups of fibrations

Yanshuai Qin
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Abstract

Let $\mathcal{X}\rightarrow C$ be a dominant morphism between smooth irreducible varieties over a finitely generated field $k$ such that the generic fiber $X$ is smooth, projective and geometrically connected. Assuming that $C$ is a curve with function field $K$, we build a relation between the Tate-Shafarevich group for $\mathrm{Pic}^0_{X/K}$ and the geometric Brauer groups for $\mathcal{X}$ and $X$, generalizing a theorem of Artin and Grothendieck for fibered surfaces to arbitrary relative dimension.

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Yanshuai Qin. 2020-12-02. On the Brauer groups of fibrations. https://doi.org/10.1007/s00209-024-03487-8

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