Variational analysis of the Crouzeix ratio

Anne Greenbaum, Adrian S. Lewis, Michael L. Overton

Research output: Contribution to journalArticle

Abstract

Let W(A) denote the field of values (numerical range) of a matrix A. For any polynomial p and matrix A, define the Crouzeix ratio to have numerator max {| p(ζ)

Original languageEnglish (US)
Pages (from-to)229-243
Number of pages15
JournalMathematical Programming
Volume164
Issue number1-2
DOIs
StatePublished - Jul 1 2017

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Keywords

  • 15A60
  • 49J52

ASJC Scopus subject areas

  • Software
  • Mathematics(all)

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