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The Convergence of Some Spectral Characteristics on the Convergent Series
Abstract
In this study, convergence properties of spectral, numerical and Crawford gap functions via convergences of Hilbert space operator series in difference and ratio cases are investigated. Obtained results have been applied to some classes continuous functions of the operators.
Keywords
Thanks
The author sincerely thanks to the editor and the referees for helpful suggestions.
References
- Gelfand, M. (1941). Normierte ringe. Matematicheskii Sbornik, 9(51), 3-24.
- Halmos, P. R. (1982). A Hilbert Space Problem Book. Springer-Verlag, New York.
- Yamazaki, T. (2007). On upper and lower bounds of the numerical radius and equality condition. Studia Math., 178, 83-89.
- Gustafson, K. E., & Rao, D. K. M. (1997). Numerical Range: The Field of Values of Linear Operators and Matrices. Springer, New York.
- Bani-Domi, W., & Kittaneh, F. (2021). Refined and generalized numerical radius inequalities for 2x2 operator matrices. Linear Algebra Appl., 624, 364-386.
- Bhunia, P., & Paul, K. (2021). New upper bounds for the numerical radius of Hilbert space operators. Bull. Sci. Math., 167, 1-11.
- Bhunia, P., Paul K., & Nayak, R. K. (2021). Sharp inequalities for the numerical radius of Hilbert space operators and operator matrices. Math. Inequal. Appl., 24, 167-183.
- Kittaneh, F. (2003). A numerical radius inequality and an estimate for the numerical radius of the Frobenius companion matrix. Studia Math., 158, 11-17.
Details
Primary Language
English
Subjects
Approximation Theory and Asymptotic Methods
Journal Section
Research Article
Authors
Publication Date
November 30, 2023
Submission Date
March 9, 2023
Acceptance Date
May 29, 2023
Published in Issue
Year 2023 Volume: 10 Number: 2
APA
Otkun Çevik, E. (2023). The Convergence of Some Spectral Characteristics on the Convergent Series. Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi, 10(2), 423-429. https://doi.org/10.35193/bseufbd.1262386
AMA
1.Otkun Çevik E. The Convergence of Some Spectral Characteristics on the Convergent Series. Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi. 2023;10(2):423-429. doi:10.35193/bseufbd.1262386
Chicago
Otkun Çevik, Elif. 2023. “The Convergence of Some Spectral Characteristics on the Convergent Series”. Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi 10 (2): 423-29. https://doi.org/10.35193/bseufbd.1262386.
EndNote
Otkun Çevik E (November 1, 2023) The Convergence of Some Spectral Characteristics on the Convergent Series. Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi 10 2 423–429.
IEEE
[1]E. Otkun Çevik, “The Convergence of Some Spectral Characteristics on the Convergent Series”, Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi, vol. 10, no. 2, pp. 423–429, Nov. 2023, doi: 10.35193/bseufbd.1262386.
ISNAD
Otkun Çevik, Elif. “The Convergence of Some Spectral Characteristics on the Convergent Series”. Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi 10/2 (November 1, 2023): 423-429. https://doi.org/10.35193/bseufbd.1262386.
JAMA
1.Otkun Çevik E. The Convergence of Some Spectral Characteristics on the Convergent Series. Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi. 2023;10:423–429.
MLA
Otkun Çevik, Elif. “The Convergence of Some Spectral Characteristics on the Convergent Series”. Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi, vol. 10, no. 2, Nov. 2023, pp. 423-9, doi:10.35193/bseufbd.1262386.
Vancouver
1.Elif Otkun Çevik. The Convergence of Some Spectral Characteristics on the Convergent Series. Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi. 2023 Nov. 1;10(2):423-9. doi:10.35193/bseufbd.1262386