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Rational homology spheres and the four-ball genus of knots

Owens, B. et al.
Enlighten Publications · Papers
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qa-mathematics
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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