Fukaya category conjecture for compatible tangential structures

Let (Θ,Φ)(\Theta,\Phi) be a tangential pair, meaning based spaces equipped with maps fitting into a commutative diagram over BOBUBO \to BU. Let XX admit a Φ\Phi-structure, set A:=Thom(Ω2ΦBU×Z)A:= \operatorname{Thom}(\Omega^2\Phi \to BU \times \mathbb{Z}), and let RR be the Thom spectrum of the stable vector bundle over ΩF\Omega F, where FF is the homotopy fibre of ΘΦ\Theta \to \Phi. Compatible tangential Fukaya-category conjecture. There exists a Fukaya category F(X;A,R)\mathcal{F}(X;A,R) whose objects are exact Lagrangians LL equipped with a compatible Θ\Theta-structure: the diagram LΘBOL \to \Theta \to BO over XΦBUX \to \Phi \to BU commutes, with the horizontal composites classifying TLTL and TXTX. The construction would extend Lagrangian Floer theory to tangential pairs, with coefficients controlled by the AA-algebra RR; existence of this Fukaya category is not established in the supplied text.

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Primary source

Noah Porcelli and Ivan Smith, “Spectral Floer theory and tangential structures”, arXiv:2411.03257 (2025).

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