Note on Khovanov link cohomology

Abstract

We extend Lee's result on sl(2) Khovanov cohomology of a link L to the general sl(n) case: a filtered chain complex C(L) whose spectral sequence E_2 term equals Khovanov cohomology is exhibited. We also compute C(L)'s cohomology: it depends only on linking numbers of certain sublinks of L.

12 pages, 6 figures

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