The almost positive link exact Lagrangian fillability conjecture

An almost positive link is an oriented link that is not positive and has a diagram with exactly one negative crossing. An exact Lagrangian filling is a Lagrangian filling in the symplectization of the standard contact 33-manifold (R3,ξstd)(\mathbf{R}^{3},\xi_{std}) satisfying the exactness condition.

Exact Lagrangian fillability conjecture. All almost positive links are exact Lagrangian fillable.

This extends the known theorem that all positive links are exact Lagrangian fillable. The conjecture is presented as a natural analogue for almost positive links, and its resolution is not specified in the source.

Sources & referencesView supporting material

Primary source

Keiji Tagami, “On the Lagrangian fillability of almost positive links”, arXiv:1709.08834 (2023).

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