About the d-bar-equation at isolated singularities with regular exceptional set

Abstract

Let Y be a pure dimensional analytic variety in C^n with an isolated singularity at the origin such that the exceptional set X of a desingularization of Y is regular. The main objective of this paper is to present a technique which allows to determine obstructions to the solvability of the d-bar-equation in the $L^2$ respectively $L^{\infty }$ sense on Y^*=Y-{0} in terms of certain cohomology classes on X. More precisely, let D be a Stein domain, relatively compact in Y, containing the origin, D^*=D-{0}. We give a sufficient condition for the solvability of the d-bar-equation in the $L^2$-sense on D^*; and in the $L^{\infty }$ sense, if D is in addition strongly pseudoconvex. If Y is an irreducible cone, we also give some necessary conditions and obtain optimal Hoelder estimates for solutions of the d-bar-equation.

41 pages

References in corpus (1)

• An explicit d-bar-integration formula for weighted homogeneous varieties

Cited by in corpus (6)

• Koppelman formulas on the A_1-singularity
• An explicit d-bar-integration formula for weighted homogeneous varieties II: forms of higher degree
• $L^2$-Riemann-Roch for singular complex curves
• The d-bar-equation on homogeneous varieties with an isolated singularity
• Compactness of the d-bar-Neumann operator on singular complex spaces
• The Dolbeault complex with weights according to normal crossings