Twisted Endoscopy from a Sheaf-Theoretic Perspective

  • Aaron Christie
  • Paul MezoEmail author
Conference paper
Part of the Simons Symposia book series (SISY)


The standard theory of endoscopy for real groups has two parallel formulations. The original formulation of Langlands and Shelstad relies on methods in harmonic analysis. The subsequent formulation of Adams, Barbasch and Vogan relies on sheaf-theoretic methods. The original formulation was extended by Kottwitz and Shelstad to twisted endoscopy. We extend the sheaf-theoretic formulation to the context of twisted endoscopy and provide applications for computing Arthur packets.


Representations of lie groups Sheaf cohomology Endoscopy 



P. Mezo was supported in part by NSERC grant RGPIN 293148-2010.


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© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Mathematics and StatisticsCarleton UniversityOttawaCanada

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