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We study the regularization of an oriented 1-foliation $\mathcal{F}$ on $M\setminus \Sigma$ where $M$ is a smooth manifold and $\Sigma \subset M$ is aclosed subset, which can be interpreted as the discontinuity locus of$\mathcal{F}$. In the spirit of Filippov's work, we define a sliding and sewingdynamics on the discontinuity locus $\Sigma$ as some sort of limit of thedynamics of a nearby smooth 1-foliation and obtain conditions to identifywhether a point belongs to the sliding or sewing regions.

Regularization of Discontinuous Foliations: Blowing up and Sliding Conditions via Fenichel Theory