Geodesic
The nil Hecke ring and Deodhar's conjecture on Bruhat intervals.
Inventiones mathematicae, Tome 111 (1993) no. 1, pp. 571-574

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Zbl
Mots-clés : nil Hecke ring, Coxeter system, length function, Bruhat order, reflections 
M.J. Dyer. The nil Hecke ring and Deodhar's conjecture on Bruhat intervals.. Inventiones mathematicae, Tome 111 (1993) no. 1, pp. 571-574. http://geodesic.mathdoc.fr/item/IM_1993__111_1_144089/
@article{IM_1993__111_1_144089,
     author = {M.J. Dyer},
     title = {The nil {Hecke} ring and {Deodhar's} conjecture on {Bruhat} intervals.},
     journal = {Inventiones mathematicae},
     pages = {571--574},
     year = {1993},
     volume = {111},
     number = {1},
     zbl = {0813.20043},
     url = {http://geodesic.mathdoc.fr/item/IM_1993__111_1_144089/}
}
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