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The Berkani's property and a note on some recent results
Linear and Multilinear Algebra ( IF 0.9 ) Pub Date : 2021-06-16 , DOI: 10.1080/03081087.2021.1939254
Zakariae Aznay 1 , Hassan Zariouh 2
Affiliation  

In this paper, we continue the study of Berkani's property (UWΠ) introduced in [Berkani M, Kachad M. New Browder and Weyl type theorems. Bull Korean Math Soc. 2015;52:439–452.], in connection with other Weyl-type theorems. Moreover, we give counterexamples to show that some recent results related to this property, which are announced and proved by P. Aiena and M. Kachad in [Aiena P, Kachad M. Property (UWΠ) and perturbations. Ann Funct Anal. 2020;11:29–46.] are false. Furthermore, we specify the mistakes committed in each of them and we give the correct versions. We also give a global note on the paper [Jayanthi N, Vasanthakumar P. A new Browder type property. Inter J Math Anal. 2020;14:1–11].



中文翻译:

Berkani 的财产和一些最近结果的注释

在本文中,我们继续研究 Berkani 的性质(üWπ)在 [Berkani M, Kachad M. New Browder 和 Weyl 类型定理中介绍。公牛韩国数学 Soc。2015;52:439–452.],与其他 Weyl 型定理有关。此外,我们给出反例来说明 P. Aiena 和 M. Kachad 在 [Aiena P, Kachad M. Property(üWπ)和扰动。安功能肛门。2020;11:29–46.] 是错误的。此外,我们详细说明了其中每一个所犯的错误,并给出了正确的版本。我们还在论文 [Jayanthi N, Vasanthakumar P. A new Browder type property. Inter J 数学肛门。2020;14:1-11]。

更新日期:2021-06-16
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