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Finite polynomial cohomology for general varieties

Besser, A; Loeffler, D; Zerbes, SL; (2016) Finite polynomial cohomology for general varieties. Annales mathématiques du Québec , 40 (1) pp. 203-220. 10.1007/s40316-015-0041-7. Green open access

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Abstract

Nekovar and Niziol have introduced in [arxiv:1309.7620] a version of syntomic cohomology valid for arbitrary varieties over p-adic fields. This uses a mapping cone construction similar to the rigid syntomic cohomology of the first author in the good-reduction case, but with Hyodo--Kato (log-crystalline) cohomology in place of rigid cohomology. In this short note, we describe a cohomology theory which is a modification of the theory of Nekovar and Niziol, modified by replacing 1 - Phi (where Phi is the Frobenius map) with other polynomials in Phi. This is the analogue for general varieties of the finite-polynomial cohomology defined by the first author for varieties with good reduction. We use this cohomology theory to give formulae for p-adic regulator maps on curves or products of curves, without imposing any good reduction hypotheses.

Type: Article
Title: Finite polynomial cohomology for general varieties
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/s40316-015-0041-7
Publisher version: http://dx.doi.org/10.1007/s40316-015-0041-7
Language: English
Additional information: © The Author(s) 2016. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://​creativecommons.​org/​licenses/​by/​4.​0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Keywords: Finite-polynomial cohomology; Syntomic cohomology; Regulators
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1436873
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