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DTSTART;TZID=America/Chicago:20260424T100000
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DTSTAMP:20260418T042614Z
SUMMARY:Thesis Defense | Elchanan Nafcha (Northwestern University)
UID:641741@northwestern.edu
TZID:America/Chicago
DESCRIPTION:Title: Nodal degeneration of chiral algebras and the Verlinde formula  Abstract: Chiral algebras describe families of operators over algebraic curves. They were introduced by Beilinson and Drinfeld as an algebro-geometric generalization of vertex operator algebras\, a mathematical model for the space of local observables in a two-dimensional conformal field theory. For a vertex operator algebra V and an algebraic curve X\, one associates a vector space of global observables\, known as the space of conformal blocks\, which has important applications in geometric representation theory and algebraic geometry. A conjecture by Verlinde\, later proven by Tsuchiya-Ueno-Yamada and Damiolini-Gibney-Tarasca\, gives an excision formula for the computation of this space. In this talk\, I will describe a partial generalization of this story to the case of chiral algebras and their global counterpart\, given by the chiral homology complex.
LOCATION:Lunt Hall\, 218 (Common Room)\, 2033 Sheridan Road\, Evanston\, IL 60208
TRANSP:OPAQUE
URL:https://planitpurple.northwestern.edu/event/641741
CREATED:20260414T050000Z
STATUS:CONFIRMED
LAST-MODIFIED:20260415T165453Z
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