【摘要】 拟正定阵是正定阵（Ｈｅｒｍｉｔｅ阵）概念的一般化，本文对拟正定阵的基本性质进行了一些研究，并将Ｓｃｈｕｒ关于正定阵的Ｈａｄａｍａｒｄ乘积的著名结果推广到拟正定阵，从而得到了更多的有用结论。更多还原

【Abstract】 Quasi-positive definite matrix is the generalization of positive definite matrix The present paper studies the basic properties of quasi-positive definite matrices,and comes to more useful conclusions by generalizing Schurs achievements on Hadamard product of the positive definite matrix to quasi-positive definite matrix theory更多还原