Geodesic
The Height Function on the 2-Dimensional Cohomology of a Flag Manifold
Journal of Lie theory, Tome 15 (2005) no. 1, pp. 219-226.

Voir la notice de l'article provenant de la source Heldermann Verlag

Let G/T be the flag manifold of a compact semisimple Lie group G modulo a maximal torus T, where T is a subset of G. We express the height function on the 2-dimensional integral cohomology H2(G/T) of G/T in terms of the geometry of the root systems of the Lie groups.
Classification : 53C30, 57T15, 22E60
Mots-clés : Lie algebra, Weyl group, flag manifolds, cohomology 
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H. Duan; X. Zhao . The Height Function on the 2-Dimensional Cohomology of a Flag Manifold. Journal of Lie theory, Tome 15 (2005) no. 1, pp. 219-226. http://geodesic.mathdoc.fr/item/JLT_2005_15_1_JLT_2005_15_1_a13/