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arxiv: 2404.05672 · v1 · pith:IHQEMZH6new · submitted 2024-04-08 · 🧮 math.CO

Enumerating runs, valleys, and peaks in Catalan words

classification 🧮 math.CO
keywords peaksvalleysrunsascentscatalandescentsnumbersome
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We provide generating functions, formulas, and asymptotic expressions for the number of Catalan words based on the number of runs of ascents (descents), runs of weak ascents (descents), $\ell$-valleys, valleys, symmetric valleys, $\ell$-peaks, peaks, and symmetric peaks. We also establish some bijections with restricted Dyck paths and ordered trees that transports some statistics.

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