期刊
OPERATORS AND MATRICES
卷 9, 期 4, 页码 917-924出版社
ELEMENT
DOI: 10.7153/oam-09-54
关键词
Positive partial transpose; inequality; trace; singular value
类别
A 2x2 block matrix [GRAPHICS] is positive partial transpose (PPT) if both [GRAPHICS] and [GRAPHICS] are positive semidefinite. This article presents some inequalities related to this class of matrices. Among others, we show that the Hua matrix, which is PPT, reveals a remarkable singular value inequality for contractive matrices.
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