English

Overconvergent de Rham-Witt cohomology for semistable varieties

Algebraic Geometry 2020-06-25 v2 Number Theory

Abstract

We define an overconvergent version of the Hyodo-Kato complex for semistable varieties YY over perfect fields of positive characteristic, and prove that its hypercohomology tensored with Q\mathbb{Q} recovers the log-rigid cohomology when YY is quasi-projective. We then describe the monodromy operator using the overconvergent Hyodo-Kato complex. Finally, we show that overconvergent Hyodo-Kato cohomology agrees with log-crystalline cohomology in the projective semistable case.

Keywords

Cite

@article{arxiv.1711.09943,
  title  = {Overconvergent de Rham-Witt cohomology for semistable varieties},
  author = {Oliver Gregory and Andreas Langer},
  journal= {arXiv preprint arXiv:1711.09943},
  year   = {2020}
}

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30 pages