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arxiv: math/0411447 · v2 · submitted 2004-11-20 · 🧮 math.QA · math.GT

Link homology and Frobenius extensions

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keywords theoriesextensionsfrobeniushomologylinkbar-natancohomologycommutative
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We explain how rank two Frobenius extensions of commutative rings lead to link homology theories and discuss relations between these theories, Bar-Natan theories, equivariant cohomology and the Rasmussen invariant.

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