On pseudo-involutions, involutions and quasi-involutions in the group of almost Riordan arrays

2019/01/11 by Barry, Paul, Pantelidis, Nikolaos
#05A15 #11C20 #15B36 #Combinatorics (math.CO) #FOS: Mathematics

paper · doi:10.48550/arxiv.1901.03734

Abstract

The group of almost Riordan arrays contains the group of Riordan arrays as a subgroup. In this note, we exhibit examples of pseudo-involutions, involutions and quasi-involutions in the group of almost Riordan arrays.

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