On the cohomology of reciprocity sheaves

Federico Binda; Kay Rülling; Shuji Saito

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arXiv · 2010.03301

On the cohomology of reciprocity sheaves

Federico Binda·Kay Rülling·Shuji Saito

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Abstract

In this paper we show the existence of an action of Chow correspondences on the cohomology of reciprocity sheaves. In order to do so, we prove a number of structural results, such as a projective bundle formula, a blow-up formula, a Gysin sequence, and the existence of proper pushforward. In this way we recover and generalize analogous statements for the cohomology of Hodge sheaves and Hodge-Witt sheaves. We give several applications of the general theory to problems which have been classically studied. Among these applications, we construct new birational invariants of smooth projective varieties and obstructions to the existence of zero-cycles of degree one from the cohomology of reciprocity sheaves.

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BibTeX RIS

Federico Binda, Kay Rülling, Shuji Saito. 2020-10-07. On the cohomology of reciprocity sheaves. https://arxiv.org/abs/2010.03301

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