English

Even grade generic skew-symmetric matrix polynomials with bounded rank

Representation Theory 2023-12-29 v1 Numerical Analysis Numerical Analysis

Abstract

We show that the set of m×mm \times m complex skew-symmetric matrix polynomials of even grade dd, i.e., of degree at most dd, and (normal) rank at most 2r2r is the closure of the single set of matrix polynomials with certain, explicitly described, complete eigenstructure. This complete eigenstructure corresponds to the most generic m×mm \times m complex skew-symmetric matrix polynomials of even grade dd and rank at most 2r2r. The analogous problem for the case of skew-symmetric matrix polynomials of odd grade is solved in [Linear Algebra Appl., 536:1-18, 2018].

Keywords

Cite

@article{arxiv.2312.16672,
  title  = {Even grade generic skew-symmetric matrix polynomials with bounded rank},
  author = {Fernando De Terán and Andrii Dmytryshyn and Froilán M. Dopico},
  journal= {arXiv preprint arXiv:2312.16672},
  year   = {2023}
}

Comments

24 pages. arXiv admin note: substantial text overlap with arXiv:1703.05797

R2 v1 2026-06-28T14:03:09.857Z