On Kippenhahn curves and higher-rank numerical ranges of some matrices
Functional Analysis
2021-04-19 v1
Abstract
The higher rank numerical ranges of generic matrices are described in terms of the components of their Kippenhahn curves. Cases of tridiagonal (in particular, reciprocal) 2-periodic matrices are treated in more detail.
Keywords
Cite
@article{arxiv.2104.07893,
title = {On Kippenhahn curves and higher-rank numerical ranges of some matrices},
author = {Natália Bebiano and Joáo da Providéncia and Ilya M. Spitkovsky},
journal= {arXiv preprint arXiv:2104.07893},
year = {2021}
}
Comments
14 pages, 10 figures