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arXiv · 0711.1850

On the mu-bar invariant of rational surface singularities

Abstract

We show that for rational surface singularities with odd determinant the mu-bar invariant defined by W. Neumann is an obstruction for the link of the singularity to bound a rational homology 4-ball. We identify the mu-bar invariant with the corresponding correction term in Heegaard Floer theory.

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Andras I. Stipsicz. 2008-05-20. On the mu-bar invariant of rational surface singularities. https://arxiv.org/abs/0711.1850

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