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Non-ambiguous trees: New results and generalisation
European Journal of Combinatorics ( IF 1 ) Pub Date : 2021-04-10 , DOI: 10.1016/j.ejc.2021.103331 Jean-Christophe Aval , Adrien Boussicault , Bérénice Delcroix-Oger , Florent Hivert , Patxi Laborde-Zubieta
中文翻译:
无歧义的树:新结果和概括
更新日期:2021-04-11
European Journal of Combinatorics ( IF 1 ) Pub Date : 2021-04-10 , DOI: 10.1016/j.ejc.2021.103331 Jean-Christophe Aval , Adrien Boussicault , Bérénice Delcroix-Oger , Florent Hivert , Patxi Laborde-Zubieta
We present a new definition of non-ambiguous trees (NATs) as labelled binary trees. We thus get a differential equation whose solution can be described combinatorially. This yields a new formula for the number of NATs. We also obtain -versions of our formula. We finally generalise NATs to higher dimension.
中文翻译:
无歧义的树:新结果和概括
我们提出了无歧义树(NAT)的新定义,称为带标记的二叉树。因此,我们得到了一个微分方程,其解可以组合地描述。这为NAT的数量产生了一个新的公式。我们还获得-我们的公式的版本。最后,我们将NAT推广到更高的维度。