Boundary value matrix problems and Drazin invertible operators

Let $A$ and $B$ be given linear operators on Banach spaces $X$ and $Y$, we denote by $M_C$ the operator defined on $X \oplus Y$ by $M_{C}= \begin{pmatrix} A & C \\ 0 & B% \end{pmatrix}.$ In this paper, we study an abstract boundary value matrix problems with a spectral parameter described b...

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Bibliographic Details
Main Author: K. Miloud Hocine
Format: Article
Language:German
Published: Ivan Franko National University of Lviv 2022-03-01
Series:Математичні Студії
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Online Access:http://matstud.org.ua/ojs/index.php/matstud/article/view/169
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