On definite lattices bounded by integer surgeries along knots with slice genus at most 2

Golla, Marco; Scaduto, Christopher

doi:10.1090/tran/7823

On definite lattices bounded by integer surgeries along knots with slice genus at most 2
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by Marco Golla and Christopher Scaduto PDF

Trans. Amer. Math. Soc. 372 (2019), 7805-7829 Request permission

Abstract:

We classify the positive definite intersection forms that arise from smooth 4-manifolds with torsion-free homology bounded by positive integer surgeries on the right-handed trefoil. A similar, slightly less complete classification is given for the $(2,5)$-torus knot, and analogous results are obtained for integer surgeries on knots of slice genus at most 2. The proofs use input from Yang–Mills instanton gauge theory, Heegaard Floer correction terms, and the topology of singular complex plane curves.

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