Non-gatherable Triples for Nonaffine Root Systems
نویسندگان
چکیده
This paper contains a complete description of minimal non-gatherable triangle triples in the lambda-sequences for the classical root systems, F4 and E6. Such sequences are associated with reduced decompositions (words) in affine and non-affine Weyl groups. The existence of the non-gatherable triples is a combinatorial obstacle for using the technique of intertwiners for an explicit description of the irreducible representations of the (double) affine Hecke algebras, complementary to their algebraic-geometric theory.
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