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## Fundamenta Mathematicae

2014 | 225 | 1 | 343-364
Tytuł artykułu

### Torsion of Khovanov homology

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Khovanov homology is a recently introduced invariant of oriented links in ℝ³. It categorifies the Jones polynomial in the sense that the (graded) Euler characteristic of Khovanov homology is a version of the Jones polynomial for links. In this paper we study torsion of Khovanov homology. Based on our calculations, we formulate several conjectures about the torsion and prove weaker versions of the first two of them. In particular, we prove that all non-split alternating links have their integer Khovanov homology almost determined by the Jones polynomial and signature. The only remaining indeterminacy is that one cannot distinguish between $ℤ_{2^{k}}$ factors in the canonical decomposition of the Khovanov homology groups for different values of k.
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Tom
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343-364
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wydano
2014
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• Department of Mathematics, The George Washington University, Monroe Hall, 2115 G St. NW, Washington, DC 20052, U.S.A.
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