Sum of squared logarithms: an inequality relating positive definite matrices and their matrix logarithm

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Mircea Bîrsan
  • Patrizio Neff
  • Johannes Lankeit

External Research Organisations

  • University of Duisburg-Essen
  • Al. I. Cuza University
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Details

Original languageEnglish
Article number168
Number of pages16
JournalJournal of Inequalities and Applications
Volume2013
Publication statusPublished - 12 Apr 2013
Externally publishedYes

Abstract

Let [InlineEquation not available: see fulltext.] be such that [InlineEquation not available: see fulltext.] and [Equation not available: see fulltext.] Then [Equation not available: see fulltext.] This can also be stated in terms of real positive definite [InlineEquation not available: see fulltext.]-matrices [InlineEquation not available: see fulltext.], [InlineEquation not available: see fulltext.]: If their determinants are equal, [InlineEquation not available: see fulltext.], then [Equation not available: see fulltext.] where log is the principal matrix logarithm and [InlineEquation not available: see fulltext.] denotes the Frobenius matrix norm. Applications in matrix analysis and nonlinear elasticity are indicated. MSC: 26D05, 26D07.

Keywords

    characteristic polynomial, elementary symmetric polynomials, inequality, matrix logarithm, means, positive definite matrices

ASJC Scopus subject areas

Cite this

Sum of squared logarithms: an inequality relating positive definite matrices and their matrix logarithm. / Bîrsan, Mircea; Neff, Patrizio; Lankeit, Johannes.
In: Journal of Inequalities and Applications, Vol. 2013, 168, 12.04.2013.

Research output: Contribution to journalArticleResearchpeer review

Bîrsan M, Neff P, Lankeit J. Sum of squared logarithms: an inequality relating positive definite matrices and their matrix logarithm. Journal of Inequalities and Applications. 2013 Apr 12;2013:168. doi: 10.48550/arXiv.1301.6604, 10.1186/1029-242X-2013-168
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