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Perturbating Upper Semi-fredholm With Strictly Singular Operators
Sarajevo Journal of MathematicsGiven an upper semi-Fredholm operator $L$, following the work of P. Cassaza and N. Kalton [1] and others, we introduce and study a set of upper semi-Fredholm operators having the same index as $L$ and which is invariant under strictly singular ...
Fernando Galaz-Fontes
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Mathematical methods in the applied sciences
Through this work, we establish the periodicity of solutions for the following neutral differential equation defined as ddtGwt=LGwt+D(t,wt)+H(t)$$ \frac{d}{dt}\mathcal{G}{w}_t=\mathcal{LG}{w}_t+\mathcal{D}\left(t,{w}_t\right)&#
Mohammed Kriche
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Through this work, we establish the periodicity of solutions for the following neutral differential equation defined as ddtGwt=LGwt+D(t,wt)+H(t)$$ \frac{d}{dt}\mathcal{G}{w}_t=\mathcal{LG}{w}_t+\mathcal{D}\left(t,{w}_t\right)&#
Mohammed Kriche
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Spectral Analysis of Perturbed Fredholm Operators
Complex Analysis and Operator Theory, 2022S. Bouzidi, N. Moalla, I. Walha
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Analytic perturbation of semi-fredholm operators
, 1980R. Mennicken, B. Sagraloff
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Perturbations of semi-Fredholm operators with complemented range
, 1989S. Goldberg
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On the class of almost order Fredholm operators
Rendiconti del Circolo Matematico di Palermo Series 2Boulbeba Abdelmoumen, Hassen Magtouf
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Linear maps preserving semi-Fredholm operators and generalized invertibility
, 2009M. Mbekhta, P. Šemrl
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Measurement: Journal of the International Measurement Confederation, 2021
Hamed Majidifard +2 more
exaly
Hamed Majidifard +2 more
exaly