Lifting involutions in a Weyl group to the torus normalizer

Media type: E-Article
Title: Lifting involutions in a Weyl group to the torus normalizer
Contributor: Lusztig, G.
Published: American Mathematical Society (AMS), 2018
Published in: Representation Theory of the American Mathematical Society, 22 (2018) 2, Seite 27-44
Language: English
DOI: 10.1090/ert/513
ISSN: 1088-4165
Keywords: Mathematics (miscellaneous)
Origination:
Footnote:
Description: Let N N be the normalizer of a maximal torus T T in a split reductive group over F q F_q , and let w w be an involution in the Weyl group N / T N/T . We explicitly construct a lifting n n of w w in N N such that the image of n n under the Frobenius map is equal to the inverse of n n .
Access State: Open Access

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