The RSS (process size) field from the ps command output might be used to provide an approximate size of the core file. For example
ps 命令输出中的 RSS（进程大小）字段可用于提供核心文件的近似大小。
2
This paper indicated that the sequence of approximate value of eigenvalue is monotone convergent in the iteration process of matrix iteration method. And also gave examples.
本文指出，在矩阵迭代法的迭代过程中，特征值近似值序列是单调收敛的，并给出计算实例。
3
Paul's approximate method is used to simplify the process of the derivation for applying actually.