Compactness of the complex Green operator
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Let n be a bounded smooth pseudoconvex domain. We show that compactness of the complex Green operator Gq on (0, g)-forms on b implies compactness of the -Neumann operator Nq on . We prove that 1 q n-2 and b satisfies (Pq) and (Pn-q-1), then Gq is a compact operator (and so is Gn-1-q). Our method relies on a jump type formula to represent forms on the boundary, and we prove an auxiliary compactness result for an 'annulus' between two pseudoconvex domains. Our results, combined with the known characterization of compactness in the -Neumann problem on locally convexifiable domains, yield the corresponding characterization of compactness of the complex Green operator(s) on these domains. International Press 2008.
