Convolutive sequences, II: Parametrizations
Combinatorics
2026-08-02 v1 Number Theory
Abstract
In recent work, the authors defined a sequence to be -convolutive exactly if \begin{align*} \sum_{n\ge 0} a_{mn} q^n = \left(\sum_{n\ge 0} a_n q^n\right)^m \end{align*} for a specific positive integer and provided proofs of the - and -convolutivity of a small number of sequences arising from primitive eta-products. Since the completion of that work, the authors have discovered many new instances of convolutive eta-products. The main focus of this work is to unify all but one of these instances in a parametric way.
Cite
@article{arxiv.2608.01136,
title = {Convolutive sequences, II: Parametrizations},
author = {Shane Chern and Dennis Eichhorn and Shishuo Fu and James A. Sellers},
journal= {arXiv preprint arXiv:2608.01136},
year = {2026}
}
Comments
17 pages, 2 tables