On the rank of quaternion Hankel matrices
Rings and Algebras
2026-05-13 v2 Signal Processing
Abstract
This paper discusses the left and right ranks of quaternion matrices with Hankel structure. While they are in general different for arbitrary quaternion matrices, we show that the left and right ranks of quaternion Hankel matrices are equal. Moreover, we establish the relation between Hankel matrices and the existence of linear recurrence relations with quaternion coefficients and discuss some practical implications for computational methods relying on low-rank properties of quaternion Hankel matrices.
Keywords
Cite
@article{arxiv.2604.22594,
title = {On the rank of quaternion Hankel matrices},
author = {Philippe Flores and Julien Flamant and Nicolas Le Bihan},
journal= {arXiv preprint arXiv:2604.22594},
year = {2026}
}
Comments
12 pages, 1 figure