Obstruction theories and virtual fundamental classes
classification
🧮 math.AG
keywords
obstructiontheoryartinbehrend-fantechiclassesdefinitiondefinitionsdeformation
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We give a new definition of an obstruction theory for infinitesimal deformation theory and relate it to earlier definitions of Artin, Fantechi-Manetti, Li-Tian, and Behrend-Fantechi.
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