The conjectural integral surgery triangle for rationally null-homologous knots

Let K^\widehat{K} be a rationally null-homologous knot in Y^\widehat{Y}, and let μ^\hat{\mu} and λ^\hat{\lambda} be the slope data used in the construction. Given mZm\in\mathbb{Z} and sufficiently large kk, define the sutured instanton homology objects appearing in the surgery triangle. The integral surgery triangle conjecture. There exists an exact triangle

\xymatrix{ \boldsymbol{\gamma}_{2\hat{\lambda}-(2m+2k-1)\hat{\mu}}\ar[rr]^{\pi_{m,k}(\hat{\mu})}&&\widehat{\mathbf{\Gamma}}_{m-1+2k}\ar[dl]\\ &\widehat{\mathbf{Y}}_{\hat{\lambda}-m\hat{\mu}}=I^{\sharp}(-\widehat{Y}_{-m}(\widehat{K}))\ar[ul]& }

Moreover, if λ^mμ^\hat{\lambda}-m\hat{\mu} is not the Seifert longitude λ\lambda, then

πm,k(μ^)=Ψ+,m1+2km+kψ,μ1(μ^)+Ψ,m1+2km+kψ+,μ1(μ^).\pi_{m,k}(\hat{\mu})=\Psi_{+,m-1+2k}^{m+k}\circ\psi_{-,\mu}^{1}(\hat{\mu}^{\prime\prime})+\Psi_{-,m-1+2k}^{m+k}\circ\psi_{+,\mu}^{1}(\hat{\mu}^{\prime\prime}).

This is the proposed integral surgery formula in the rationally null-homologous setting; the source gives no evidence that it has been proved or refuted.

Sources & referencesView supporting material

Primary source

Zhenkun Li and Fan Ye, “Knot surgery formulae for instanton Floer homology I: the main theorem”, arXiv:2206.10077 (2024).

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