The lift of the weak proper Calabi–Yau structure on the Rabinowitz Fukaya category

Let XX be the setting of Theorem, let RW(X)\mathcal{RW}(X) denote its Rabinowitz Fukaya category, and let the weak proper Calabi–Yau structure on RW(X)\mathcal{RW}(X) be the one supplied by that theorem. A strong proper Calabi–Yau structure is a chain map

ϕ~:CC(RW(X),RW(X))hS1k[n]\tilde{\phi}: \operatorname{CC}_{*}(\mathcal{RW}(X),\mathcal{RW}(X))_{hS^{1}} \to {\mathbf{k}}[-n]

such that its composition with the canonical projection

CC(RW(X),RW(X))CC(RW(X),RW(X))hS1\operatorname{CC}_{*}(\mathcal{RW}(X),\mathcal{RW}(X)) \to \operatorname{CC}_{*}(\mathcal{RW}(X),\mathcal{RW}(X))_{hS^{1}}

is the given weak proper Calabi–Yau structure. Lift conjecture. The weak proper Calabi–Yau structure from Theorem admits a lift to a strong proper Calabi–Yau structure on RW(X)\mathcal{RW}(X). This asks for an enhancement from the established weak structure to a homotopy-orbit-level, or strong, proper Calabi–Yau structure; the supplied text gives no resolution status.

Sources & referencesView supporting material

Primary source

Yuan Gao, “Abstract categorical residues and Calabi-Yau structures”, arXiv:2412.05927 (2025).

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