The pop-stack-sorting operator on Tamari lattices. - Letong Hong (Adv. Appl. Math., 2022)

Length-Four Pattern Avoidance in Inversion Sequences. - Letong Hong; Rupert Li (Electron. J. Comb., 2022)

No extremal square-free words over large alphabets. - Letong Hong; Shengtong Zhang (Comb. Theory, 2022)

A Markov chain on the solution space of edge colorings of bipartite graphs. - Letong Hong; István Miklós (Discret. Appl. Math., 2023)