Le lemme fondamental pour les alg├ębres de Lie

Bulletin of the American Mathematical Society . 49 (1) (January 2012) 169-179.

Author's comments: This note was written for Mathematical Reviews, but it is of more interest for me than a simple review would have been because I came to understand on writing it and reflecting on its contents that perverse sheaves are likely to have much more import for nonabelian harmonic analysis in the sense of Harish-Chandra than I had previously appreciated.