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arXiv · 2206.10276

Prismatic crystals over the de Rham period sheaf

Hui Gao·Yu Min·Yupeng Wang
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Abstract

Let $\mathcal{O}_K$ be a mixed characteristic complete discrete valuation ring with perfect residue field. We study $\mathbb{B}_\mathrm{dR}^+$-crystals on the (log-) prismatic site of $\mathcal{O}_K$, which are crystals defined over the de Rham period sheaf. We first classify these crystals using certain log connections. By constructing a Sen--Fontaine theory for $\mathbf{B}_{\mathrm{dR}}^+$-representations over a Kummer tower, we further classify these crystals by (log-) nearly de Rham representations. In addition, we compare (log-) prismatic cohomology of these crystals with the corresponding Sen--Fontaine cohomology and Galois cohomology.

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Hui Gao, Yu Min, Yupeng Wang. 2022-06-21. Prismatic crystals over the de Rham period sheaf. https://arxiv.org/abs/2206.10276

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