Tangential-structure Floer module conjecture

Let XX be a Liouville domain with stable tangent bundle classified by XBUX \to BU, and let ΦBU\Phi \to BU be a based space over BUBU. Suppose the classifying map XBUX \to BU factors through ΦBU\Phi \to BU, and let A:=Thom(Ω2ΦBU×Z)A:= \operatorname{Thom}(\Omega^2\Phi \to BU \times \mathbb{Z}). Let ϕ\phi be a symplectomorphism preserving the Φ\Phi-structure. Tangential-structure Floer module conjecture. Floer theory of ϕ\phi, including Hamiltonian Floer theory and symplectic cohomology, can be defined as a module over the ring spectrum AA; write SH(ϕ;A)SH(\phi;A) or SH(X;A)SH(X;A) for this AA-module. The preceding Floer moduli-space construction gives the relevant Ω2Φ\Omega^2\Phi-structures, and the claim extends the framed and complex-oriented flow-category framework to symplectic cohomology with tangential structures.

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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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