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Comparison of non-archimedean and logarithmic mirror constructions via the Frobenius structure theorem

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arxiv 2204.00940 v3 pith:UV5IYVYI submitted 2022-04-02 math.AG

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keywords mirrorstructurefrobeniustorusassumptionconjectureconstructedcontains
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For a log Calabi Yau pair (X,D) with X\D smooth affine, satisfying either assumption 1.1 of "The canonical wall structure and intrinsic mirror symmetry" or contains a Zariski dense torus, we prove under the condition that D is the support of a nef divisor, that the structure constants defining a trace form on the mirror algebra constructed by Gross-Siebert are given by the naive curve counts defined by Keel-Yu in definition 1.1 of "The Frobenius structure theorem for log Calabi-Yau varieties containing a torus". As a corollary, we deduce the equality of the mirror algebras constructed by Gross-Siebert and Keel-Yu in the case X\D contains a Zariski dense torus. In addition, we use this result to prove a mirror conjecture proposed by Mandel in "Fano mirror periods from the Frobenius structure conjecture" for Fano pairs satisfying assumption 1.1.

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  1. Quantum periods, toric degenerations and intrinsic mirror symmetry

    math.AG 2025-01 conditional novelty 7.0 of 10

    The classical periods of the intrinsic mirror algebra of a log Calabi-Yau Fano pair reproduce the regularized quantum periods of the Fano variety.

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