Abstract
We introduce a generalization of the Ozsváth–Szabó –invariant to links by studying a filtered version of link grid homology. We prove that this invariant remains unchanged under strong concordance and we show that it produces a lower bound for the slice genus of a link. We show that this bound is sharp for torus links and we also give an application to Legendrian link invariants in the standard contact –sphere.
Citation
Alberto Cavallo. "The concordance invariant tau in link grid homology." Algebr. Geom. Topol. 18 (4) 1917 - 1951, 2018. https://doi.org/10.2140/agt.2018.18.1917
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