Categorical Saito theory, I: A comparison result

Junwu Tu

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arXiv · 1902.04596

Categorical Saito theory, I: A comparison result

Junwu Tu

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Abstract

In this paper, we present an explicit cyclic minimal $A_\infty$ model for the category of matrix factorizations $\MF(W)$ of an isolated hypersurface singularity. The key observation is to use Kontsevich's deformation quantization technique. Pushing this idea further, we use the Tsygan formality map to obtain a comparison theorem that the categorical Variation of Semi-infinite Hodge Structure of $\MF(W)$ is isomorphic to Saito's original geometric construction in primitive form theory. An immediate corollary of this comparison result is that the analogue of Caldararu's conjecture holds for the category $\MF(W)$.

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Junwu Tu. 2019-02-12. Categorical Saito theory, I: A comparison result. https://arxiv.org/abs/1902.04596

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