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An invariant of tangle cobordisms

Author: Mikhail Khovanov
Journal: Trans. Amer. Math. Soc. 358 (2006), 315-327
MSC (2000): Primary 57Q45
Posted: March 18, 2005
MathSciNet review: 2171235
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Abstract | References | Similar Articles | Additional Information

Abstract: We construct a new invariant of tangle cobordisms. The invariant of a tangle is a complex of bimodules over certain rings, well-defined up to chain homotopy equivalence. The invariant of a tangle cobordism is a homomorphism between complexes of bimodules assigned to boundaries of the cobordism.

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