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Hyodo-Kato cohomology in rigid geometry: some foundational results

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arxiv 2502.13315 v1 pith:7ZKMCQMX submitted 2025-02-18 math.AG math.NT

classification math.AGmath.NT
keywords cohomologyhyodo-katorigidanalyticfoundationalgeometryresultssequence
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By exploring the geometric properties of Hyodo-Kato cohomology in rigid geometry, we establish several foundational results, including the semistable conjecture for \'etale cohomology of almost proper rigid analytic varieties, and GAGA (comparison between algebraic and analytic) for Hyodo-Kato cohomology. A central component of our approach is the Gysin sequence for Hyodo-Kato cohomology, which we construct using the open-closed exact sequence for compactly supported Hyodo-Kato cohomology and Poincar\'e duality.

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Cited by 1 Pith paper

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  1. On the Kummer pro-\'etale cohomology of $\mathbb B_{\operatorname{dR}}$

    math.NT 2025-01 conditional novelty 6.0 of 10

    For log smooth rigid analytic varieties, Kummer pro-étale B_dR cohomology is isomorphic to log de Rham cohomology, and logarithmic B_dR^+ cohomology gives degeneration of Hodge-Tate and Hodge-log de Rham spectral sequ...

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