Good reductions of Shimura varieties of Hodge type in arbitrary unramified mixed characteristic. Part I

Adrian Vasiu

Mathematische Nachrichten, 2020, vol. 293, issue 12, 2399-2448

Abstract: We prove the existence of good smooth integral models of Shimura varieties of Hodge type in arbitrary unramified mixed characteristic (0, p). As a first application we provide a smooth solution (answer) to a conjecture (question) of Langlands for Shimura varieties of Hodge type. As a second application we prove the existence in arbitrary unramified mixed characteristic (0, p) of integral canonical models of projective Shimura varieties of Hodge type with respect to h‐hyperspecial subgroups as pro‐étale covers of Néron models; this forms progress towards the proof of conjectures of Milne and Reimann. Though the second application was known before in some cases, its proof is new and more of a principle.

Date: 2020
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https://doi.org/10.1002/mana.201700415

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