English

Hodge symmetry for rigid varieties via log hard Lefschetz

Algebraic Geometry 2020-05-14 v2 Number Theory

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."

Keywords

Cite

@article{arxiv.2005.02246,
  title  = {Hodge symmetry for rigid varieties via log hard Lefschetz},
  author = {Piotr Achinger},
  journal= {arXiv preprint arXiv:2005.02246},
  year   = {2020}
}

Comments

18 pages; updated references