Bulletin of the Iranian Mathematical Society

Bulletin of the Iranian Mathematical Society

Weak log-majorization inequalities of singular values between normal matrices and their absolute values

Document Type : Research Paper

Authors
School of Mathematical Sciences‎, ‎Huaibei Normal University‎, ‎Huaibei 235000‎, P.R. ‎China.
Abstract
‎This paper presents two main results that the singular values of the Hadamard product of normal matrices $A_i$ are weakly log-majorized by the singular values of the Hadamard product of $|A_{i}|$ and the singular values of the sum of normal matrices $A_i$ are weakly log-majorized by the singular values of the sum of $|A_{i}|$‎. ‎Some applications to these inequalities are also given‎. ‎In addition‎, ‎several related and new inequalities are obtained‎.
Keywords
Subjects

Volume 42, Issue 1 - Serial Number 1
February 2016
Pages 143-153

  • Receive Date 18 April 2014
  • Revise Date 23 November 2014
  • Accept Date 24 November 2014