# Mathematics Colloquia and Seminars

In her work on crystal structures on rigged configurations, Schilling proposed a promotion operator $\overline{pr}$ on the set of rigged configurations, and conjectured that $\overline{pr}$ corresponds to the promotion operator $pr$ on crystals of type A under a generalization of the bijection of Kerov, Kirillov and Reshetikhin between crystals (or Young tableaux) and rigged configurations.