Closed operator functional calculus in Banach modules and applications

被引:2
|
作者
Baskakov, Anatoly G. [1 ]
Krishtal, Ilya A. [2 ]
Uskova, Natalia B. [3 ]
机构
[1] Voronezh State Univ, Dept Appl Math & Mech, Voronezh 394693, Russia
[2] Northern Illinois Univ, Dept Math Sci, De Kalb, IL 60115 USA
[3] Voronezh State Tech Univ, Dept Higher Math & Math Phys Modeling, Voronezh 394026, Russia
关键词
Functional calculus; Banach modules; Asymptotic spectral analysis; Spectral mapping theorem; SPECTRAL THEORY; MATRICES; FRAMES;
D O I
10.1016/j.jmaa.2020.124473
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We describe a closed operator functional calculus in Banach modules over the group algebra L-1(R) and illustrate its usefulness with a few applications. In particular, we deduce a spectral mapping theorem for operators in the functional calculus, which generalizes some of the known results. We also obtain an estimate for the spectrum of a perturbed differential operator in a certain class. (C) 2020 Elsevier Inc. All rights reserved.
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页数:14
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