AbstractThe Deligne conjecture, many times a theorem, states that for a dg category C, the dg endomorphisms End(Id_C) of the identity functor-- that is, the Hochschild cochains-- carries a natural structure of 2-algebra. When C is endowed with a Calabi-Yau structure, then Hochschild cochains and Hochschild chains are identified up to a shift, and we may transport the circle action from Hochschi...
Algebraic Geometry SeminarOrganizers:Caucher Birkar,Jia Jia 贾甲Speaker:Long Wang (Fudan University)Time:Fri., 15:30-16:30, Nov. 15. 2024Venue:B725, Shuangqing Complex Building AOnline:Zoom Meeting ID: 262 865 5007Passcode: YMSCBeyond the movable coneMorrison proposed a version of the cone conjecture for the nef cones of Calabi-Yau manifolds which was inspired by mirror symmetry. Later in...