Geodesic
Perturbation results in the Fredholm theory and m-essential spectra of some matrix operators
Filomat, Tome 35 (2021) no. 7, p. 2141

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DOI

In this paper, we will use some new properties of non-compactness measure, in order to establish a description of the M-essential spectrum for some matrix operators on Banach spaces
DOI : 10.2298/FIL2107141A
Classification : 47H08, 47A53, 47A55, 47A56
Keywords: Measures of noncompactness in Banach spaces, Fredholm operators, Essential spectra, Matrix operators 
Boulbeba Abdelmoumen; Sadok Chakroun; Mnif Maher. Perturbation results in the Fredholm theory and m-essential spectra of some matrix operators. Filomat, Tome 35 (2021) no. 7, p. 2141 . doi: 10.2298/FIL2107141A
@article{10_2298_FIL2107141A,
     author = {Boulbeba Abdelmoumen and Sadok Chakroun and Mnif Maher},
     title = {Perturbation results in the {Fredholm} theory and m-essential spectra of some matrix operators},
     journal = {Filomat},
     pages = {2141 },
     year = {2021},
     volume = {35},
     number = {7},
     doi = {10.2298/FIL2107141A},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/FIL2107141A/}
}
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