Comultiplication in link Floer homology and transversely non-simple links
Comultiplication in link Floer homology and transversely non-simple links
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John Baldwin, Princeton University and IAS
By theorems of Bennequin, Wrinkle and Orevkov-Shevchishin, transverse links in the unique tight contact structure on R3 may thought of as closed braids. For a word h in the braid group on n strands, let us denote by Th the corresponding transverse link. In this talk, I'll describe a relationship, for two braid words h and g, between the transverse link invariants in Floer homology associated to Tg and Th with the invariant associated to Thg. And I'll describe how this relationship can be used to produce a plethora of new prime transversely non-simple link types.