The braid-group action conjecture for link Floer chain complexes

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Let (Y,L,p)(Y,L,p) be a pointed link, let ρ(σi)\rho(\sigma_i) denote the automorphism induced by the braid-group generator σi\sigma_i, and let Ψi\Psi_i and Φi\Phi_i be the maps defining the basepoint-moving automorphism on CFL(Y,L,p)\mathit{CFL}(Y,L,p). Write N(K(Al))N(K(\mathcal{A}_l)) for the relevant homotopy category and Aut⁡N(K(Al))(CFL(Y,L,p))\operatorname{Aut}_{N(K(\mathcal{A}_l))}(\mathit{CFL}(Y,L,p)) for its automorphism group.

Braid-group action conjecture. The two automorphisms ρ(σi)\rho(\sigma_i) and Id⁡+ΨiΦi\operatorname{Id}+\Psi_i\Phi_i in Aut⁡N(K(Al))(CFL(Y,L,p))\operatorname{Aut}_{N(K(\mathcal{A}_l))}(\mathit{CFL}(Y,L,p)) are equal.

This conjecture predicts that the automorphism arising from moving the basepoint agrees with the automorphism associated to the braid-group action. It is motivated in the source by the preceding theorem on the induced action, but no resolution is supplied here.

References

Primary source

Sucharit Sarkar, “Moving basepoints and the induced automorphisms of link Floer homology”, arXiv:1109.2168 (2011).

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