Generalized instanton surgery exact-triangle conjecture

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Let YY be a closed three-manifold, let K⊂YK\subset Y be a knot, and let Yn(K)Y_n(K) denote the result of nn-surgery on KK. Let Wn′(K)W_n^\prime(K) be the cobordism defined above, and let I♯I^\sharp denote the instanton Floer homology theory. Generalized instanton surgery exact-triangle conjecture. For any integer nn and any positive integer mm, there is an exact triangle

\xymatrix@R=6ex{ I^\sharp(Y_n(K))\ar[rr]&&I^\sharp(Y_{n+m}(K))\ar[dl]^{F^\prime}\\ &\bigoplus_{i=1}^m I^\sharp(Y)\ar[ul]& }

where the map FF is related to the cobordism Wn′(K)W_n^\prime(K). This would generalize the usual instanton surgery exact triangle; the source explains that the expected proof should adapt the standard proof with modifications, but does not establish the statement.

References

Primary source

Zhenkun Li and Fan Ye, “SU(2) representations and a large surgery formula”, arXiv:2107.11005 (2026).

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