The normwise structured backward error of an approximate eigen-pair is defined and its explicit formula is given.
给出一类周期特征值问题的向后误差分析，定义了特征对的范数型结构向后误差，并给出了显式表达式。
The normwise structured backward error of an approximate eigen-pair is defined and its explicit formula is given.
给出一类周期特征值问题的向后误差分析，定义了特征对的范数型结构向后误差，并给出了显式表达式。
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