2021
DOI: 10.31392/mfat-npu26_3.2021.02
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On the ascent-descent spectrum

Abstract: We establish various properties as well as diverse relations of the ascent and descent spectra for bounded linear operators. We specially focus on the theory of subspectrum. Furthermore, we construct a new concept of convergence for such spectra.Встановлюються рiзнi властивостi спектрiв пiдйому та спуску для обмежених лiнiйних операторiв, а також певнi спiввiдношення мiж ними. Ми зосереджуємося на теорiї пiдспектру. Крiм того, ми пропонуємо нове поняття збiжностi для таких спектрiв.2020 Mathematics Subject Cla… Show more

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