Legendrian representative conjecture for knots in lens spaces with 3-sphere surgeries

Let L(p,q)L(p,q) be a lens space with universally tight contact structure ξUT\xi_{UT}, and let KL(p,q)K\subset L(p,q) be a knot admitting a surgery to the 3-sphere. A Legendrian representative of KK is a Legendrian knot L(L(p,q),ξUT)L\subset (L(p,q),\xi_{UT}) representing KK. Legendrian nonvanishing conjecture. Every such knot has a Legendrian representative LL satisfying

λ^+(L),λ^(L)0.\widehat{\lambda}^+(L),\widehat{\lambda}^-(L)\ne 0.

The conjecture proposes that the Legendrian GRID invariants can detect knots in lens spaces admitting surgery to the 3-sphere, a class related by duality to the Berge conjecture and simple knots. Its status is not specified in the source.

Sources & referencesView supporting material

Primary source

Lev Tovstopyat-Nelip, “Grid invariants in universally tight lens spaces”, arXiv:1809.07272 (2019).

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