Proceedings of the American Mathematical Society

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ISSN 1088-6826(e) ISSN 0002-9939(p)

On the $\overline{\mu}$ -invariant of rational surface singularities

Author(s): András I. Stipsicz
Journal: Proc. Amer. Math. Soc. 136 (2008), 3815-3823.
MSC (2000): Primary 14J17, 57M27
Posted: May 28, 2008
MathSciNet review: 2425720
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Abstract: We show that for rational surface singularities with odd determinant the $\overline{\mu}$ -invariant defined by W. Neumann is an obstruction for the link of the singularity to bound a rational homology 4-ball. We identify the $\overline{\mu}$ -invariant with the corresponding correction term in Heegaard Floer theory.

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