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math.CO2026
Richardson tableaux and Motzkin paths
Sen-Peng Eu, Tung-Shan Fu, Yi-Hao Kao +1
Richardson tableaux were introduced by Karp and Precup in their study of irreducible components of Springer fibers that are Richardson varieties. Guo gave an explicit bijection bet…
math.CO2026
Rowmotion on hook and two-row alt -Tamari lattices
Sen-Peng Eu, Vei-Cheng Hioe, Yi-Lin Lee
In 2024, Ceballos and Chenevi{è}re introduced alt -Tamari lattices, parameterized by a lattice path and an increment vector , as a common generalization of -Tamari and…