The holonomy of a singular leaf

Abstract

We introduce the holonomy of a singular leaf $L$ of a singular foliation as a sequence of group morphisms from ${\pi }_n(L)$ to the ${\pi }_{n-1}$ of the universal Lie $\infty$-algebroid of the transverse foliation of $L$. We include these morphisms in a long exact sequence, thus relating them to the holonomy groupoid of Androulidakis and Skandalis and to a similar construction by Brahic and Zhu for Lie algebroids.