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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Some deformation problems in the theory of Donaldson-Thomas invariants

## Some deformation problems in the theory of Donaldson-Thomas invariantsAdd to your list(s) Download to your calendar using vCal - Soibelman, Y (Kansas State University)
- Friday 05 April 2013, 13:30-14:30
- Seminar Room 1, Newton Institute.
If you have a question about this talk, please contact Mustapha Amrani. Grothendieck-Teichmller Groups, Deformation and Operads Theory of Donaldson-Thomas invariants, developed recently in our joint work with Kontsevich, produces collections of integers (more generally, elements of some rings of motives) which in many examples ``count” semistable objects in 3-dimensional Calabi-Yau categories. The collections depend on parameters and can jump when parameters cross codimension one walls (``wall-crossing phenomenon”). I am going to discuss a way to produce DT-invariants from the deformation theory of the ``wheel” of projective lines in a formal toric Poisson variety. This approach is related to so distant topics as Hitchin integrable systems, nonabelian Hodge theory and cluster algebras. 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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