Chern currents of coherent sheaves
Complex Variables
2025-08-28 v5 Algebraic Geometry
Abstract
Given a finite locally free resolution of a coherent analytic sheaf , equipped with Hermitian metrics and connections, we construct an explicit current, obtained as the limit of certain smooth Chern forms of , that represents the Chern class of and has support on the support of . If the connections are -connections and has pure dimension, then the first nontrivial component of this Chern current coincides with (a constant times) the fundamental cycle of . The proof of this goes through a generalized Poincar\'e-Lelong formula, previously obtained by the authors, and a result that relates the Chern current to the residue current associated with the locally free resolution.
Keywords
Cite
@article{arxiv.2105.14843,
title = {Chern currents of coherent sheaves},
author = {Richard Lärkäng and Elizabeth Wulcan},
journal= {arXiv preprint arXiv:2105.14843},
year = {2025}
}
Comments
26 pages. v5: Correct \'Epiga article number, no other change to v3