Lie infty-algebroids and singular foliations
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A singular (or Hermann) foliation on a smooth manifold $M$ can be seen as a subsheaf of the sheaf $\mathfrak{X}$ of vector fields on $M$. We show that if this singular foliation admits a resolution (in the sense of sheaves) consisting of sections of a graded vector bundle of finite type, then one can lift the Lie bracket of vector fields to a Lie $\infty$-algebroid structure on this resolution, that we call a universal Lie $\infty$-algebroid associated to the foliation. The name is justified because it is isomorphic (up to homotopy) to any other Lie $\infty$-algebroid structure built on any other resolution of the given singular foliation.
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On symmetries of singular foliations
Weak symmetry actions of Lie algebras on singular foliations induce unique-up-to-homotopy Lie∞-morphisms to the DGLA on the universal Lie∞-algebroid, with consequences including non-extendable actions and bi-submersio...
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