Knop F (1990)
Publication Language: German
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 1990
Publisher: Springer Verlag (Germany)
Book Volume: 99
Pages Range: 1-23
Journal Issue: 1
DOI: 10.1007/BF01234409
Let G be a connected, reductive group defined over an alebraically closed field of characteristic zero. We assign to any G-variety X a finite cristallographic reflection group W_X by means of the moment map on the cotangent bundle. This generalizes the "little Weyl group" of a symmetric space. The Weyl group WX is related to the equivariant compactification theory of X. We determine the closure of the image of the moment map and the generic isotropy group of the action of G on the cotangent bundle. As a byproduct we determine the ideal of elements of U(g) which act trivially on X as a differential operator.
APA:
Knop, F. (1990). Weylgruppe und Momentabbildung. Inventiones Mathematicae, 99(1), 1-23. https://doi.org/10.1007/BF01234409
MLA:
Knop, Friedrich. "Weylgruppe und Momentabbildung." Inventiones Mathematicae 99.1 (1990): 1-23.
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