The motive of a variety with cellular resolution of singularities

A complex variety X admits a cellular resolution of singularities if there exists a resolution of singularities X˜→X such that its exceptional locus as well as X˜ and the singular locus of X admit a cellular decomposition. We give a concrete description of the motive with compact support of X in terms of its Borel–Moore homology, under some mild conditions. We give many examples, including rational projective curves and toric varieties of dimension two and three.

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Publication Details

Journal
Fundamenta Mathematicae
Published
2025-08-28
DOI
https://doi.org/10.4064/fm240903-9-7
Primary Topic
Algebraic Geometry and Number Theory
Type
article
Field-Weighted Citation Impact
0.00
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article

The motive of a variety with cellular resolution of singularities

Fundamenta Mathematicae
Algebraic Geometry and Number Theory
article

The motive of a variety with cellular resolution of singularities

article en

Abstract

A complex variety X admits a cellular resolution of singularities if there exists a resolution of singularities X˜→X such that its exceptional locus as well as X˜ and the singular locus of X admit a cellular decomposition. We give a concrete description of the motive with compact support of X in terms of its Borel–Moore homology, under some mild conditions. We give many examples, including rational projective curves and toric varieties of dimension two and three.

Fundamenta Mathematicae
University of Warsaw (PL)
Openalex Percentile: Top 72%
Algebraic Geometry and Number Theory
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