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arXiv · 1705.08270

Generalized Pascal triangle for binomial coefficients of words

Julien Leroy·Michel Rigo·Manon Stipulanti
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Abstract

We introduce a generalization of Pascal triangle based on binomial coefficients of finite words. These coefficients count the number of times a word appears as a subsequence of another finite word. Similarly to the Sierpiński gasket that can be built as the limit set, for the Hausdorff distance, of a convergent sequence of normalized compact blocks extracted from Pascal triangle modulo $2$, we describe and study the first properties of the subset of $[0, 1] \times [0, 1]$ associated with this extended Pascal triangle modulo a prime $p$.

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Julien Leroy, Michel Rigo, Manon Stipulanti. 2017-05-23. Generalized Pascal triangle for binomial coefficients of words. https://doi.org/10.1016/j.aam.2016.04.006

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