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arxiv: 1901.10140 · v1 · pith:MFDXZ6QMnew · submitted 2019-01-29 · 🧮 math.CO

Smirnov Trees

classification 🧮 math.CO
keywords smirnovtreeswordsakinascent-descentbijectionbinarycall
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We introduce a generalization of Smirnov words in the context of labeled binary trees, which we call Smirnov trees. We study the generating function for ascent-descent statistics on Smirnov trees and establish that it is $e$-positive, which is akin to the classical case of Smirnov words. Our proof relies on an intricate weight-preserving bijection.

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