De Rham comparison and Poincar\'e duality for rigid varieties
Algebraic Geometry
2022-11-01 v2 Number Theory
Abstract
Over any smooth algebraic variety over a -adic local field , we construct the de Rham comparison isomorphisms for the \'etale cohomology with partial compact support of de Rham -local systems, and show that they are compatible with Poincar\'e duality and with the canonical morphisms among such cohomology. We deduce these results from their analogues for rigid analytic varieties that are Zariski open in some proper smooth rigid analytic varieties over . In particular, we prove finiteness of \'etale cohomology with partial compact support of any -local systems, and establish the Poincar\'e duality for such cohomology after inverting .
Cite
@article{arxiv.1912.13030,
title = {De Rham comparison and Poincar\'e duality for rigid varieties},
author = {Kai-Wen Lan and Ruochuan Liu and Xinwen Zhu},
journal= {arXiv preprint arXiv:1912.13030},
year = {2022}
}
Comments
61 pages. Final version. To appear in Peking Mathematical Journal