On the $μ$-admissible set in the extended affine Weyl groups of $E_6$ and $E_7$
arXiv:1411.5427 · doi:10.1016/j.jalgebra.2015.11.047
Abstract
Giving explicit examples we show that the $μ$-admissible set and the $μ$-permissible set do not agree for non-trivial minuscule coweights in the cases of $E_6$ and $E_7$.
11 pages