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SUMMARY:David Ben-Zvi (University of Texas at Austin)
DTSTART:20240319T203000Z
DTEND:20240319T213000Z
DTSTAMP:20260419T151929Z
UID:BC-MIT/10
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/BC-MIT/10/">
 Geometric Arthur parameters</a>\nby David Ben-Zvi (University of Texas at 
 Austin) as part of BC-MIT number theory seminar\n\nLecture held in MIT roo
 m 2-449.\n\nAbstract\nArthur proposed a description of automorphic forms i
 n terms of tempered automorphic forms for centralizers of SL2 homomorphism
 s. I will explain a point of view on the Arthur parameterization in the se
 tting of function fields coming from relative Langlands duality\, emphasiz
 ing the role of $shearing$ (the symmetry of the derived category of graded
  vector spaces which simultaneously shifts weights and cohomological degre
 es). Shearing helps account for a deficit of Tannakian formalism in the de
 rived context - there are more eigenvalues for tensor actions than one mig
 ht expect. The talk reports on joint work with Yiannis Sakellaridis and Ak
 shay Venkatesh.\n
LOCATION:https://researchseminars.org/talk/BC-MIT/10/
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