The cohomological conjecture for Dirac matrix factorizations

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Let △\triangle be a combinatorially spin Delzant polytope such that the real toric locus X△RX_\triangle^\mathbb{R} is Fano. Let M△M_\triangle be the associated Dirac matrix factorization, let End⁡(M△)0\operatorname{End}(M_\triangle)_0 denote its degree-zero endomorphism complex, and let (R△)0(R_\triangle)_0 be the degree-zero part of the coefficient ring. Let H∗H^* denote cohomology.

Cohomological conjecture. For each combinatorially spin Delzant polytope △\triangle such that X△RX_\triangle^\mathbb{R} is Fano, we have

H∗(End⁡(M△)0)≅H∗(X△R;(R△)0).H^*(\operatorname{End}(M_\triangle)_0)\cong H^*(X_\triangle^\mathbb{R}; (R_\triangle)_0).

This is a cohomological mirror-symmetry prediction relating the Dirac matrix factorization to the real toric locus. The supplied text states that the claim is proved for △=△n\triangle=\triangle^n when nn is odd, while the general case remains unresolved.

References

Primary source

May Sela and Jake P. Solomon, “Numerical invariants of normed matrix factorizations”, arXiv:2412.04437 (2024).

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