Geodesic
The equality cases for the inequalities of Oppenheim and Schur for positive semi-definite matrices
Czechoslovak Mathematical Journal, Tome 59 (2009) no. 1, pp. 197-206

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In this paper, necessary and sufficient conditions for equality in the inequalities of Oppenheim and Schur for positive semidefinite matrices are investigated.
In this paper, necessary and sufficient conditions for equality in the inequalities of Oppenheim and Schur for positive semidefinite matrices are investigated.
Classification : 15A45, 15A57
Keywords: Oppenheim's inequality; Schur's inequality; positive semidefinite matrix; Hadamard product 
Zhang, Xiao-Dong; Ding, Chang-Xing. The equality cases for the inequalities of Oppenheim and Schur for positive semi-definite matrices. Czechoslovak Mathematical Journal, Tome 59 (2009) no. 1, pp. 197-206. http://geodesic.mathdoc.fr/item/CMJ_2009_59_1_a13/
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     year = {2009},
     volume = {59},
     number = {1},
     mrnumber = {2486625},
     zbl = {1224.15042},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2009_59_1_a13/}
}
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