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Moroccan Journal of Pure and Applied Analysis
Volume 7 (2021): Issue 1 (January 2021)
Open Access
On the quasi-Fredholm and Saphar spectrum of strongly continuous Cosine operator function
Hamid Boua
Hamid Boua
Department of Mathematics and Computer Science, Pluridisciplinary Faculty of Nador, Mohammed First University
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Boua, Hamid
Nov 22, 2020
Moroccan Journal of Pure and Applied Analysis
Volume 7 (2021): Issue 1 (January 2021)
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Published Online:
Nov 22, 2020
Page range:
80 - 87
Received:
Aug 08, 2020
Accepted:
Nov 08, 2020
DOI:
https://doi.org/10.2478/mjpaa-2021-0008
Keywords
Cosine
,
Quasi-Fredholm
,
Semi-regular
,
Saphar
© 2020 Hamid Boua, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
