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arXiv · 2604.15193

Rational analytic syntomic cohomology

Maximilian Hauck
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Abstract

We define and study the rational analytic syntomification $X^{\mathrm{Syn}}$ of a partially proper rigid-analytic variety $X$ over $\mathbb{Q}_p$. We establish Poincar\'e duality and a theory of first Chern classes for the resulting cohomology theory, identify vector bundles on $X^{\mathrm{Syn}}$ with de Rham bundles on the Fargues--Fontaine curve of $X^{\diamondsuit}$ and recover several classical comparison theorems in $p$-adic Hodge theory. We also develop analogues of our results and constructions over $\mathbb{C}_p$.

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Maximilian Hauck. 2026-04-16. Rational analytic syntomic cohomology. https://arxiv.org/abs/2604.15193

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