Hodge symmetry for rigid varieties via log hard Lefschetz

preprint2020arXivOpen access

Abstract

Motivated by a question of Hansen and Li, we show that a smooth and proper rigid analytic space XX with projective reduction satisfies Hodge symmetry in the following situations: (1) the base non-archimedean field KK is of residue characteristic zero, (2) KK is pp-adic and XX has good ordinary reduction, (3) KK is pp-adic and XX has "combinatorial reduction."' We also reprove a version of their result, Hodge symmetry for H1H^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 H1H^1 and for log schemes of "combinatorial type."

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