Abstract
In this paper, necessary and sufficient conditions for equality in the inequalities of Oppenheim and Schur for positive semidefinite matrices are investigated.
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References
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Supported by National Natural Science Foundation of China (No. 10531070), National Basic Research Program of China 973 Program (No. 2006CB805900), National Research Program of China 863 Program (No. 2006AA11Z209) and the Natural Science Foundation of Shanghai (Grant No. 06ZR14049).
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Zhang, XD., Ding, CX. The equality cases for the inequalities of Oppenheim and Schur for positive semi-definite matrices. Czech Math J 59, 197–206 (2009). https://doi.org/10.1007/s10587-009-0014-6
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DOI: https://doi.org/10.1007/s10587-009-0014-6