Formations and generalized Davenport-Schinzel sequences

Jesse Geneson, Peter Tian, Katherine Tung

Let $up(r,t)=(a_1{a}_2\dots a_r{)}^t$. We investigate the problem of determining the maximum possible integer $n(r,t)$ for which there exist $2t-1$ permutations $π_1, π_2, \dots,…