Context-Free Grammars for Several Triangular Arrays

In this paper, we present a unified grammatical interpretation of the numbers that satisfy a kind of four-term recurrence relation, including the Bell triangle, the coefficients of modified Hermite polynomials, and the Bessel polynomials. Additionally, as an application, a criterion for real zeros o...

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Bibliographic Details
Main Authors: Roberta Rui Zhou, Jean Yeh, Fuquan Ren
Format: Article
Language:English
Published: MDPI AG 2022-06-01
Series:Axioms
Subjects:
Online Access:https://www.mdpi.com/2075-1680/11/6/297