A description of Rasmussen’s invariant from the divisibility of Lee’s canonical class
A description of Rasmussen’s invariant from the divisibility of Lee’s canonical class
Lee homology (a variant of Khovanov homology) over $\mathbb{Q}$ possesses the "canonical generators" as its basis. The generators (Lee's classes) $[\alpha(D, o)]$ are constructed combinatorially from an oriented link diagram $D$, one for each alternative orientation $o$ on $D$. Let $R$ be an integral domain. There exists a family of …