In this paper, backward errors for seven kinds of structured unitary matrix eigenvalue problems are discussed.
本文讨论了七类结构酉矩阵特征值问题的向后误差。
Structured matrices occur in many scientific and engineering applications, and structured matrix eigenvalue problems are widely used.
结构矩阵在很多领域出现，结构矩阵特征值问题有着非常广泛的应用。
There are all kinds of inverse eigenvalue and generalized inverse eigenvalue problems in the fields of structural design, vibration system, automation control and matrix decision etc.
在结构设计、振动系统、自动控制、矩阵对策等领域中存在各种各样的矩阵逆特征值问题及广义逆特征值问题。
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