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On the Morita invariance of Categorical Enumerative Invariants

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arxiv 2209.02744 v2 pith:XLC3MSNB submitted 2022-09-06 math.AG math.KTmath.SG

On the Morita invariance of Categorical Enumerative Invariants

Lino Amorim , Junwu Tu This is my paper
classification math.AG math.KTmath.SG
keywords invariantscalabi-yaucategoriesunitalcategoricalcyclicenumerativeinfty
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Categorical Enumerative Invariants (CEI) are invariants associated with a unital, cyclic, smooth $A_\infty$-category and a splitting of its non-commutative Hodge filtration. In this paper, we extend the definition of CEI to Calabi-Yau $A_\infty$-categories with a splitting. Moreover, we formulate and prove the Morita invariance of CEI. As part of our proof, we develop tools to construct unital and cyclic models for Calabi-Yau categories. In particular, we prove a unital version of Kontsevich-Soibelman's Darboux theorem. As an application, we compute CEI in some new examples. Also, when applied to derived categories of coherent sheaves, our results yield new invariants of smooth, proper Calabi-Yau 3-folds.

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Cited by 3 Pith papers

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