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University of Cambridge > Talks.cam > Number Theory Seminar > Variation under functoriality of geometrically-motivated classes of archimedean representations

## Variation under functoriality of geometrically-motivated classes of archimedean representationsAdd to your list(s) Download to your calendar using vCal - Wushi Goldring (Stockholm University)
- Tuesday 28 November 2017, 14:30-15:30
- MR13.
If you have a question about this talk, please contact Beth Romano. Among the circle of conjectures which forms the global Langlands correspondence, perhaps the simplest is the prediction that the Hecke eigenvalues of L and C-algebraic automorphic representations \pi are algebraic numbers. Fundamental to our current understanding of this conjecture is a dictionary between representation-theoretic properties of the archimedean component \pi_{\infty}, e.g. “non-degenerate or degenerate limit of discrete series” (LDS), and geometric properties of \pi, e.g. “appears in the coherent cohomology of a Shimura variety or Griffiths-Schmid manifold”. We propose a systematic study of the conjectural implications of Langlands functoriality to the above conjecture. To this end, we study the (in)variance of the dichotomies “LDS/non-LDS” and “non-degenerate/degenerate” under functoriality. In the positive direction, we give examples where functoriality implies new cases of algebraicity and (work in progress) show that one class of these follows unconditionally from Arthur’s work on endoscopy. This talk is part of the Number Theory Seminar series. ## This talk is included in these lists:- All CMS events
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