A+ CATEGORY SCIENTIFIC UNIT

The motive of a variety with cellular resolution of singularities

Bruno Stonek Fundamenta Mathematicae MSC: Primary 14F42; Secondary 14M25, 55N35 DOI: 10.4064/fm240903-9-7 Published online: 28 August 2025

Abstract

A complex variety $X$ admits a cellular resolution of singularities if there exists a resolution of singularities $\widetilde X\to X$ such that its exceptional locus as well as $\widetilde X$ 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.

Authors

  • Bruno StonekFaculty of Mathematics, Informatics and Mechanics
    University of Warsaw
    02-097 Warszawa, Poland
    e-mail

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