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20042026
most citedOn xD-Generalizations of Stirling Numbers and Lah Numbers via Graphs and Rooks

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math.CO2024

Bijective Enumeration and Sign-Imbalance for Permutation Depth and Excedances

Sen-Peng Eu, Tung-Shan Fu, Yuan-Hsun Lo

We present a simplified variant of Biane's bijection between permutations and 3-colored Motzkin paths with weight that keeps track of the inversion number, excedance number and a s…