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Khovanov homology detects the Hopf links
Published 11 Oct 2018 in math.GT | (1810.05040v1)
Abstract: We prove that any link in $S3$ whose Khovanov homology is the same as that of a Hopf link must be isotopic to that Hopf link. This holds for both reduced and unreduced Khovanov homology, and with coefficients in either $\mathbb{Z}$ or $\mathbb{Z}/2\mathbb{Z}$.
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