Partial Groupoid Actions on Smooth Manifolds
Given a smooth partial action $α$ of a Lie groupoid $G$ on a smooth manifold $M,$ we provide necessary and sufficient conditions for $α$ to be globalizable with smooth globalization. As an application, we provide results on the differentiable structure of orbit and stabilizer spaces induced by $α,$ which leads to other criteria for its globalization in terms of its orbit maps in the case that $α$ is free and transitive. Further, under the assumption that $α$ is free and proper, we prove that there exists exactly one differentiable structure on the quotient structure of the orbit equivalence space $M/G$ such that the quotient map $π:M\to M/G$ is a submersion
math.DG↗