论文标题
扰动不一定是交换的
Perturbations not necessarily commutative
论文作者
论文摘要
本文介绍了在扰动下保存某些光谱的情况，不一定是交换性的，并概括了几个在通勤运营商的情况下证明的结果。
This paper treatises the preservation of some spectra under perturbations not necessarily commutative and generalizes several results which have been proved in the case of commuting operators.
