In this paper, some important inequalities on norm of determinent of complex positive definite matrix and its Schurcomplement are obtained.
正定复矩阵是矩阵论中的一个重要概念，人们已经掌握了它的若干性质与结构。
2
The red and black ordering method about the coefficient matrix of a class of linear equations and the condition number of schurcomplement matrix deduced from red and black matrix are studied.