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Normed Calabi–Yau structure of Shklyarov’s ∞-trace on MF(W_Δ)

Establish that for every Delzant polytope Δ, the ∞-trace Θ of Shklyarov on the matrix factorization category MF(W_Δ) defines a normed chain-level Calabi–Yau structure in the sense of the paper’s Definition of a normed ∞-trace (cohomologically unital, gapped, valuation-preserving, and inducing a non-degenerate pairing).

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Background

From any Delzant polytope Δ, the authors construct a valued Landau–Ginzburg model LG(Δ) and equip MF(W_Δ) with Shklyarov’s trace Θ, a refinement of the Kapustin–Li trace. They prove Θ has dimension equal to dim Δ and is cohomologically unital when dim Δ is odd, and they also show Θ is normed for the standard simplex Δn with n odd.

The conjecture seeks to extend these properties to all Delzant polytopes, asserting that Θ satisfies the full normed Calabi–Yau axioms (including non-degeneracy and valuation compatibility) across MF(W_Δ). This would provide the categorical foundation needed for the enumerative mirror constructions proposed in the paper.

References

Conjecture. For each Delzant polytope \triangle, the \infty-trace \Theta on MF(W_\triangle) is a normed Calabi Yau structure.

Numerical invariants of normed matrix factorizations (2412.04437 - Sela et al., 5 Dec 2024) in Construction from toric geometry (Conjecture \ref{conj:cy})