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Defining perfect obstruction theories and virtual fundamental classes

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Nitin Chidambaram
Mon, 2021-01-11 10:30 - 12:00

I will talk about obstruction bundles and use them to give a preliminary definition of virtual fundamental classes. We will use this notion to compute the virtual fundamental class explicitly in some examples. Then, we will define virtual fundamental classes more generally as in Behrend-Fantechi using the notion of perfect obstruction theories.

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