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I will describe a holomorphic version of Weinstein’s symplectic category, in which morphisms are encoded by holomorphic Lagrangians. I will explain that Gromov—Witten invariants of log Calabi—Yau 3-folds are canonically encoded as morphisms in this category, and explain that conjecturally, the GW/DT correspondence is also a morphism in this category. An advantage of this concretely geometric perspective is that it is compatible with real structures.
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