We make use of the Mackaay–Vaz approach to the universal –homology to define a family of cycles (called –invariants) which are transverse braid invariants. This family includes Wu’s –invariant. Furthermore, we analyse the vanishing of the homology classes of the –invariants and relate it to the vanishing of Plamenevskaya’s and Wu’s invariants. Finally, we use the –invariants to produce some Bennequin-type inequalities.
Algebr. Geom. Topol.
20(4):
1729-1768
(2020).
DOI: 10.2140/agt.2020.20.1729
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