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Showing 2008 · math.GTShow all
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math.GT2008★ 1 cited
On knots with infinite smooth concordance order
Adam Simon Levine
We use the Heegaard Floer obstructions defined by Grigsby, Ruberman, and Strle to show that forty-six of the sixty-seven knots through eleven crossings whose concordance orders wer…
math.GT2008★ 7 cited
Existence of broken Lefschetz fibrations
R. Inanc Baykur
We prove that every closed oriented smooth 4-manifold X admits a broken Lefschetz fibration (aka singular Lefschetz fibration) over the 2-sphere. Given any closed orientable surfac…