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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > On the Calculus underlying Donaldson-Thomas theory

## On the Calculus underlying Donaldson-Thomas theoryAdd to your list(s) Download to your calendar using vCal - Behrend, KB (University of British Columbia)
- Thursday 27 January 2011, 15:30-16:30
- Seminar Room 1, Newton Institute.
If you have a question about this talk, please contact Mustapha Amrani. Moduli Spaces On a manifold there is the graded algebra of polyvector fields with its Lie-Schouten bracket, and the module of de Rham differentials with exteriour differentiation. This package is called a “calculus”. The moduli space of sheaves (or derived category objects) on a Calabi-Yau threefold has a kind of “virtual calculus” on it. In particular, this moduli space has virtual de Rham cohomology groups, which categorify Donaldson-Thomas invariants, at least conjecturally. We describe some attempts at constructing such a virtual calculus. This is work in progress. This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
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