HMS of log Calabi–Yau varieties over the Novikov ring

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Let (X,D)(X,D) be a log Calabi–Yau manifold, with DD an anticanonical divisor of XX, and let WX ⁣:Xˇ→CW_X\colon \check X\to\mathbb C be a mirror of (X,D)(X,D). Let Λ^≥\widehat{\Lambda}_{\geq} be the Novikov ring, and let Fuk⁡(WX,Λ^≥)\operatorname{Fuk}(W_X,\widehat{\Lambda}_{\geq}) be the derived Fukaya category over Λ^≥\widehat{\Lambda}_{\geq} generated by Lagrangians compactly Hamiltonian isotopic to Lefschetz thimbles of WXW_X. Let X∞\sqrt[\infty]{X} and D∞\sqrt[\infty]{D} be the infinite root stack of (X,D)(X,D), and let πB\pi^B be the displayed functor to aQCoh⁡(XΣ∞,D∞,Λ^)\operatorname{aQCoh}(\sqrt[\infty]{X_\Sigma},\sqrt[\infty]{D},\widehat\Lambda). HMS of log CY over the Novikov ring. There exists a Λ^≥\widehat{\Lambda}_{\geq}-linear embedding

Fuk⁡(WX,Λ^≥)↪(πB)−1(QCoh⁡(X,Λ^)).\operatorname{Fuk}(W_X,\widehat{\Lambda}_{\geq})\hookrightarrow (\pi^B)^{-1}(\operatorname{QCoh}(X,\widehat{\Lambda})).

This is a proposed homological mirror symmetry statement for log Calabi–Yau manifolds, relating the Fukaya category generated by Lefschetz thimbles to a subcategory of quasicoherent sheaves on the corresponding infinite-root-stack side. Its status is not resolved in the supplied text.

References

Primary source

Tatsuki Kuwagaki and Bingyu Zhang, “Almost mathematics, Persistence module, and Tamarkin category”, arXiv:2503.15933 (2026).

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