Segre forms of singular metrics on vector bundles and Lelong numbers
Abstract
Let be a holomorphic vector bundle. We consider a class of a singular Hermitian metrics on with analytic singularities that contains all Griffiths negative such metrics. One can define, given a smooth reference metric , a current called the associated Segre form, which defines the expected Bott-Chern class and coincides with the usual Segre form of where it is smooth. We prove that is the limit of the Segre forms of a sequence of smooth metrics if the metric is smooth outside the degeneracy locus, and in general as a limit of Segre forms of metrics with empty degeneracy locus. One can also define an associated Chern form . We prove that the Lelong numbers of and are integers if the singularities are integral, and non-negative for .
Cite
@article{arxiv.2506.15473,
title = {Segre forms of singular metrics on vector bundles and Lelong numbers},
author = {Mats Andersson and Richard Lärkäng},
journal= {arXiv preprint arXiv:2506.15473},
year = {2026}
}
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29 pages