On relative essential spectra of a 3 x 3 operator matrix involving relative generalized weak demicompactness
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Publication:5081328
DOI10.2298/FIL2013271FzbMath1498.47007MaRDI QIDQ5081328
Bilel Krichen, Aref Jeribi, Imen Ferjani
Publication date: 14 June 2022
Published in: Filomat (Search for Journal in Brave)
essential spectrummatrix operatorssemi-Fredholm operatorsrelative generalized weakly demicompact operators
Spectrum, resolvent (47A10) (Semi-) Fredholm operators; index theories (47A53) Operator matrices (47A08)
Cites Work
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