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Analytic discs and compactness of the ∂-Neumann operator

Qianyun Wang, Yuan Yuan, Xu Zhang

math.CVarXiv:2609.01561

Abstract

We construct a bounded pseudoconvex complete Reinhardt domain Ω with smooth boundary in C3 such that the ∂-Neumann operator N1 is compact although bΩ contains an analytic disc and thus also fails Catlin's Property (P) and McNeal's Property ( P). This example solves an open problem on compactness of the ∂-Neumann operator in the negative.

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