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Transactions of the American Mathematical Society
Transactions of the American Mathematical Society
ISSN 1088-6850(online) ISSN 0002-9947(print)

 

Sign changes in harmonic analysis on reductive groups


Author: Robert E. Kottwitz
Journal: Trans. Amer. Math. Soc. 278 (1983), 289-297
MSC: Primary 22E35; Secondary 22E30
MathSciNet review: 697075
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Abstract: Let $ G$ be a connected reductive group over a field $ F$. In this note the author constructs an element $ e(G)$ of the Brauer group of $ F$. The square of this element is trivial. For a local field, $ e(G)$ may be regarded as an element of $ \{ \pm 1\} $ and is needed for harmonic analysis on reductive groups over that field. For a global field there is a product formula.


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DOI: http://dx.doi.org/10.1090/S0002-9947-1983-0697075-6
PII: S 0002-9947(1983)0697075-6
Article copyright: © Copyright 1983 American Mathematical Society