Non-exact wrapped Fukaya category and deformed multiplicative preprojective algebra

Let XresX_{\mathrm{res}} be the resolution of the AnA_n surface singularity, let DrD_r be the indicated divisor, and let ss be a formal parameter with coefficient field C((s))\mathbb{C}((s)). Set qi(s)=esλiq_i(s)=e^{s\lambda_i}. Non-exact wrapped Fukaya equivalence conjecture. The perfect derived non-exact wrapped Fukaya category satisfies

DπW(XresDr)Db(Λq(s)(A~n)),D^{\pi}\mathcal{W}(X_{\mathrm{res}}\smallsetminus D_r)\simeq D^b(\Lambda^{q(s)}(\widetilde{A}_n)),

with qi(s)=esλiq_i(s)=e^{s\lambda_i}. This would provide the missing categorical computation in the non-exact setting and extend the exact-case identification to deformed multiplicative preprojective algebras; the paper notes that foundational ingredients for the non-exact category remain unavailable.

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Primary source

Johan Rydholm, “Geometric realisations of type A_n preprojective algebras in homological mirror symmetry”, arXiv:2601.12045 (2026).

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