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Pluripotential Theory and Monge–Ampère Foliations

A regular, rank one solution u of the complex homogeneous Monge–Ampere equation \({(\partial \overline{\partial }u)}^{n} = 0\) on a complex manifold is associated with the Monge–Ampere foliation, given by the complex curves along which u is harmonic. Monge–Ampere foliations find many applications in complex geometry and the selection of a good candidate for the associated Monge–Ampere foliation is always the first step in the construction of well behaved solutions of the complex homogeneous Monge–Ampere equation. Here, after reviewing some basic notions on Monge–Ampere foliations, we concentrate on two main topics. We discuss the construction of (complete) modular data for a large family of complex manifolds, which carry regular pluricomplex Green functions. This class of manifolds naturally includes all smoothly bounded, strictly linearly convex domains and all smoothly bounded, strongly pseudoconvex circular domains of \({\mathbb{C}}^{n}\). We then report on the problem of defining pluricomplex Green functions in the almost complex setting, providing sufficient conditions on almost complex structures, which ensure existence of almost complex Green pluripotentials and equality between the notions of stationary disks and of Kobayashi extremal disks, and allow extensions of known results to the case of non integrable complex structures.