In this paper, the cohomology endomorphisms of flag manifold G/T of compact simple Lie group G is completely classified, and the Lefschetz number of these endomorphisms are computed.
Xu An ZHAO.
Cohomology Endomorphisms of Flag Manifolds. Acta Mathematica Sinica, Chinese Series, 2001, 44(6): 1099-110 https://doi.org/10.12386/A2001sxxb0137