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Extremal ω-plurisubharmonic functions as envelopes of disc functionals

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Arkiv för Matematik

Abstract

For each closed, positive (1,1)-current ω on a complex manifold X and each ω-upper semicontinuous function φ on X we associate a disc functional and prove that its envelope is equal to the supremum of all ω-plurisubharmonic functions dominated by φ. This is done by reducing to the case where ω has a global potential. Then the result follows from Poletsky’s theorem, which is the special case ω=0. Applications of this result include a formula for the relative extremal function of an open set in X and, in some cases, a description of the ω-polynomial hull of a set.

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Authors and Affiliations

  1. Science Institute, University of Iceland, IS-107, Reykjavik, Iceland

    Benedikt Steinar Magnússon

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  1. Benedikt Steinar Magnússon
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Correspondence to Benedikt Steinar Magnússon.

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Magnússon, B.S. Extremal ω-plurisubharmonic functions as envelopes of disc functionals. Ark Mat 49, 383–399 (2011). https://doi.org/10.1007/s11512-010-0128-y

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  • DOI: https://doi.org/10.1007/s11512-010-0128-y

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