Hodge symmetry for rigid varieties via log hard Lefschetz

Piotr Achinger

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arXiv · 2005.02246

Hodge symmetry for rigid varieties via log hard Lefschetz

Piotr Achinger

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Abstract

Motivated by a question of Hansen and Li, we show that a smooth and proper rigid analytic space $X$ with projective reduction satisfies Hodge symmetry in the following situations: (1) the base non-archimedean field $K$ is of residue characteristic zero, (2) $K$ is $p$-adic and $X$ has good ordinary reduction, (3) $K$ is $p$-adic and $X$ has "combinatorial reduction."' We also reprove a version of their result, Hodge symmetry for $H^1$, without the use of moduli spaces of semistable sheaves. All of this relies on cases of Kato's log hard Lefschetz conjecture, which we prove for $H^1$ and for log schemes of "combinatorial type."

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Piotr Achinger. 2020-05-05. Hodge symmetry for rigid varieties via log hard Lefschetz. https://arxiv.org/abs/2005.02246

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