The orbit conjecture for real reduced double Bruhat cells
Let be a split semisimple algebraic group with Weyl group , and let be the reduced double Bruhat cell for . For a reduced word , write for the associated group acting on . Orbit conjecture. For every two elements and in , and every reduced word , the connected components of are in a natural bijection with the -orbits in . In the case and , this was proved for a special reduced word, so the general assertion is a theorem in the stated special case but is not established here in full generality.
References
Primary source
Boris Shapiro, Michael Shapiro, Alek Vainshtein and Andrei Zelevinsky, “Simply-laced Coxeter groups and groups generated by symplectic transvections”, arXiv:math/9906203 (1999).
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