sl(N)-link homology using foams and the Kapustin-Li formula
نویسنده
چکیده
In joint work with M. Mackaay and P. Vaz [4], we define an almost topological construction of a rational link homology categorifying the sl(N)-link invariant. This construction uses foams which generalize the ones introduced by Khovanov in [1]. The evaluation of closed foams uses the Kapustin-Li formula, adapted to the context of foams by Khovanov and Rozansky [2]. We conjecture that our link homology theory is equivalent to Khovanov and Rozansky’s in [3]. In this talk I will present the topological aspects of this theory and show how to use the Kapustin-Li formula in order to evaluate the closed foams.
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