English

A series of Nash resolutions of a singular foliation

Differential Geometry 2026-04-28 v2

Abstract

We construct a series of blowups (M~i,πi)iN0(\widetilde M_i,\pi_i)_{i\in \mathbb N_0} of a singular foliation by applying to the universal Lie \infty-algebroid of a singular foliation the so-called Nash modification. For i=0i=0, we recover a blowup introduced Sinan Sert\"oz, and for i=1i=1, we recover a notion due to Omar Mohsen. One of the important features is that any singular foliation becomes a Debord foliation (= projective singular foliation) after one blowup. Examples are also given.

Keywords

Cite

@article{arxiv.2301.08706,
  title  = {A series of Nash resolutions of a singular foliation},
  author = {Ruben Louis},
  journal= {arXiv preprint arXiv:2301.08706},
  year   = {2026}
}

Comments

The title has been changed. The introduction has been extended. A new section on the smoothness of the Nash blowup has been added. The main results have been clarified. These main results are taken from Chapter 7 of my PhD thesis