scientific article; zbMATH DE number 6819001

zbMath1463.47017MaRDI QIDQ4598684

Bekkai Messirdi, Mohammed Benharrat

Publication date: 15 December 2017

Full work available at URL: http://www.etamaths.com/index.php/ijaa/article/view/531

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

semi-Fredholm operatorsgap topologypure contractionsgap metricclosed densely defined linear operators

Mathematics Subject Classification ID

Norms (inequalities, more than one norm, etc.) of linear operators (47A30) Spectrum, resolvent (47A10) (Semi-) Fredholm operators; index theories (47A53) Operators on Hilbert spaces (general) (47B02)

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