Sur le nombre d'intervalles dans les treillis de Tamari
classification
🧮 math.CO
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intervalsseriestamaricomputeddansdefineddescriptionenumerate
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We enumerate the intervals in the Tamari lattices. For this, we introduce an inductive description of the intervals. Then a notion of "new interval" is defined and these are also enumerated. A a side result, the inverse of two special series is computed in a group of tree-indexed series.
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