On a Theorem of Shintani
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CΓ©dric BonnafΓ©
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Article
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1999
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Elsevier Science
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English
β 136 KB
Let be an irreducible character of G s GL β«ήβ¬ invariant under the automorphism of G induced by the field automorphism β«ήβ¬ d Βͺ β«ήβ¬ d, x Β¬ x q , and let e be a divisor of d. By a theorem of Shintani, there exists an extension of Λe Β² e : to G i whose Shintani descent to G is, up to a sign , an irred