Kippenhahn Curves of Some Tridiagonal Matrices

Natália Bebiano, João da Providência, Ilya Spitkovsky, Kenya Vazquez

Research output: Contribution to journalArticlepeer-review

Abstract

Tridiagonal matrices with constant main diagonal and reciprocal pairs of off-diagonal entries are considered. Conditions for such matrices with sizes up to 6-by-6 to have elliptical numerical ranges are obtained.

Original languageEnglish (US)
Pages (from-to)3047-3061
Number of pages15
JournalFilomat
Volume35
Issue number9
DOIs
StatePublished - 2021

Keywords

  • Elliptical
  • Kippenhahn curve
  • Numerical range
  • Reciprocal matrix
  • Tridiagonal matrix

ASJC Scopus subject areas

  • Mathematics(all)

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