2 papers
math.CO2024
Total Positivity of Quasi-Riordan Arrays
Tian-Xiao He, Roksana Słowik
In this paper the total positivity of quasi-Riordan arrays is investigated with use of the sequence characterization of quasi-Riordan arrays. Due to the correlation between quasi-R…
math.CO2024
Total Positivity of Almost-Riordan Arrays
Tian-Xiao He, Roksana Słowik
In this paper we study the total positivity of almost-Riordan arrays and establish its necessary conditions and sufficient conditions, particularly, for some…