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DTSTART;TZID=America/New_York:20260910T163000
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SUMMARY:Higher Virasoro algebras
DESCRIPTION:Geometry and Mathematical Physics Seminar \nSpeaker: Brian Williams\, Boston University \nTitle: Higher Virasoro algebras \nAbstract: I will introduce and classify central extensions of the dg Lie algebra of derived global sections of the tangent sheaf on the punctured d-disk for d > 1. Then\, I will formulate and sketch the proof of a formal and universal version of the Grothendieck–Riemann–Roch theorem. Time permitting I will discuss how to generalize this work to complements of other algebraic subvarities of affine space. This is joint work with Zhengping Gui.
URL:https://cmsa.fas.harvard.edu/event/dgphys_91026/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Mathematical Physics Seminar
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