Rational homology spheres and the four-ball genus of knots |
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| Authors: | Brendan Owens Sašo Strle |
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| Institution: | Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia |
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| Abstract: | Using the Heegaard Floer homology of Ozsváth and Szabó we investigate obstructions to a rational homology sphere bounding a four-manifold with a definite intersection pairing. As an application we obtain new lower bounds for the four-ball genus of Montesinos links. |
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| Keywords: | 57M 57R |
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