How to compare the absolute values of operator sums and the sums of absolute values?

DOI10.7153/oam-06-42zbMath1252.15029OpenAlexW2314964593MaRDI QIDQ2914878

Eun-Young Lee

Publication date: 21 September 2012

Published in: Operators and Matrices (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.7153/oam-06-42

zbMATH Keywords

operator inequalitiesconcave functionssymmetric norm

Mathematics Subject Classification ID

Norms of matrices, numerical range, applications of functional analysis to matrix theory (15A60) Miscellaneous inequalities involving matrices (15A45)

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