A prismatic approach to crystalline local systems

A prismatic approach to crystalline local systems

Let X be a smooth p-adic formal scheme. We show that integral crystalline local systems on the generic fiber of X are equivalent to prismatic F-crystals over the analytic locus of the prismatic site of X. As an application, we give a prismatic proof of Fontaine's C_crys-conjecture, for general...

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Hauptverfasser: Guo, Haoyang, Reinecke, Emanuel
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Mathematics - Number Theory
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description Let X be a smooth p-adic formal scheme. We show that integral crystalline local systems on the generic fiber of X are equivalent to prismatic F-crystals over the analytic locus of the prismatic site of X. As an application, we give a prismatic proof of Fontaine's C_crys-conjecture, for general coefficients, in the relative setting, and allowing ramified base fields. Along the way, we also establish various foundational results for the cohomology of prismatic F-crystals, including various comparison theorems, Poincar\'e duality, and Frobenius isogeny.
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We show that integral crystalline local systems on the generic fiber of X are equivalent to prismatic F-crystals over the analytic locus of the prismatic site of X. As an application, we give a prismatic proof of Fontaine's C_crys-conjecture, for general coefficients, in the relative setting, and allowing ramified base fields. Along the way, we also establish various foundational results for the cohomology of prismatic F-crystals, including various comparison theorems, Poincar\'e duality, and Frobenius isogeny.</abstract><doi>10.48550/arxiv.2203.09490</doi><oa>free_for_read</oa></addata></record>
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title A prismatic approach to crystalline local systems
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