Automorphisms of Normalizers of Maximal Tori and First Cohomology of Weyl Groups<!-- Anfang Autor -->
Journal of Lie Theory, Tome 14 (2004) no. 2, pp. 583-617
Voir la notice de l'article provenant de la source Heldermann Verlag
Let T be a maximal torus in a connected compact Lie group G, and let W be the corresponding Weyl group with its natural action on T as a reflection group. The cohomology group H1(W; T) is computed for all simple Lie groups, and the general case is studied. The method is based on a suitable interpretation of H1(W; T) as a group of (outer) automorphisms of the normalizer of T.
Classification :
20J06, 22E15, 22D45
Mots-clés : Cohomology of Weyl groups, compact Lie groups, normalizers of maximal tori, outer automorphisms
Mots-clés : Cohomology of Weyl groups, compact Lie groups, normalizers of maximal tori, outer automorphisms
J.-F. Hämmerli; M. Matthey; U. Suter. Automorphisms of Normalizers of Maximal Tori and First Cohomology of Weyl Groups <!-- Anfang Autor -->. Journal of Lie Theory, Tome 14 (2004) no. 2, pp. 583-617. http://geodesic.mathdoc.fr/item/JOLT_2004_14_2_a15/
@article{JOLT_2004_14_2_a15,
author = {J.-F. H\"ammerli and M. Matthey and U. Suter},
title = {Automorphisms of {Normalizers} of {Maximal} {Tori} and {First} {Cohomology} of {Weyl} {Groups
<!--} {Anfang} {Autor} -->},
journal = {Journal of Lie Theory},
pages = {583--617},
year = {2004},
volume = {14},
number = {2},
zbl = {1092.22004},
url = {http://geodesic.mathdoc.fr/item/JOLT_2004_14_2_a15/}
}
TY - JOUR AU - J.-F. Hämmerli AU - M. Matthey AU - U. Suter TI - Automorphisms of Normalizers of Maximal Tori and First Cohomology of Weyl Groups <!-- Anfang Autor --> JO - Journal of Lie Theory PY - 2004 SP - 583 EP - 617 VL - 14 IS - 2 UR - http://geodesic.mathdoc.fr/item/JOLT_2004_14_2_a15/ ID - JOLT_2004_14_2_a15 ER -
%0 Journal Article %A J.-F. Hämmerli %A M. Matthey %A U. Suter %T Automorphisms of Normalizers of Maximal Tori and First Cohomology of Weyl Groups <!-- Anfang Autor --> %J Journal of Lie Theory %D 2004 %P 583-617 %V 14 %N 2 %U http://geodesic.mathdoc.fr/item/JOLT_2004_14_2_a15/ %F JOLT_2004_14_2_a15