Yang, Shangjun; Cai, Qian On Oppenheim’s inequality. (English) Zbl 1082.15032 Numer. Math., J. Chin. Univ. 14, No. 2, 97-101 (2005). Reviewer: Martín Argerami (Regina) MSC: 15A45 15A15 PDFBibTeX XMLCite \textit{S. Yang} and \textit{Q. Cai}, Numer. Math., J. Chin. Univ. 14, No. 2, 97--101 (2005; Zbl 1082.15032)
Yang, Zhongpeng; Feng, Xiaoxia The Oppenheim-type inequalities for the Hadamard product of \(M\)-matrix and positive definite matrix. (English) Zbl 1077.15015 Numer. Math., J. Chin. Univ. 13, No. 2, 140-149 (2004). Reviewer: Martín Argerami (Regina) MSC: 15A45 15A15 15B48 PDFBibTeX XMLCite \textit{Z. Yang} and \textit{X. Feng}, Numer. Math., J. Chin. Univ. 13, No. 2, 140--149 (2004; Zbl 1077.15015)