Generalized instanton surgery exact-triangle conjecture

Let YY be a closed three-manifold, let KYK\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 II^\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.

Sources & referencesView supporting material

Primary source

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

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