English

On Nash resolution of (singular) Lie algebroids

Differential Geometry 2026-04-28 v3

Abstract

Any Lie algebroid AA admits a Nash-type blow-up Nash(A)\mathrm{Nash}(A) that sits in a nice short exact sequence of Lie algebroids 0KNash(A)D00\rightarrow K\rightarrow \mathrm{Nash}(A)\rightarrow \mathcal{D}\rightarrow 0 with KK a Lie algebra bundle and D\mathcal{D} a Lie algebroid whose anchor map is injective on an open dense subset. The base variety is a blowup determined by the singular foliation of AA. We provide concrete examples. Moreover, we extend the construction following Mohsen's to singular subalgebroids in the sense of Androulidakis-Zambon.

Keywords

Cite

@article{arxiv.2404.08840,
  title  = {On Nash resolution of (singular) Lie algebroids},
  author = {Ruben Louis},
  journal= {arXiv preprint arXiv:2404.08840},
  year   = {2026}
}