On the Friedrichs extension of some block operator matrices

DOI10.1007/BF01270924zbMath1056.47021MaRDI QIDQ1600109

Alexei Konstantinov, Reinhard Mennicken

Publication date: 2002

Published in: Integral Equations and Operator Theory (Search for Journal in Brave)

zbMATH Keywords

essential spectrummatrix operatorsFriedrichs extension

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) General spectral theory of ordinary differential operators (34L05) Linear symmetric and selfadjoint operators (unbounded) (47B25)

Related Items (8)

Essential Spectrum Due to Singularity ⋮ Friedrichs extensions for Sturm–Liouville operators with complex coefficients and their spectra ⋮ Adjoints and formal adjoints of matrices of unbounded operators ⋮ A factorization of extremal extensions with applications to block operator matrices ⋮ On the absolutely continuous spectrum of block operator matrices ⋮ REPRESENTATION THEOREMS FOR INDEFINITE QUADRATIC FORMS REVISITED ⋮ Gustafson, weidmann, kato, wolf, schechter and browder essential spectra of some matrix operator and application to two-group transport equation ⋮ On inequalities for eigenvalues of 2 × 2 matrices with Schatten–von Neumann entries

Cites Work

• On the essential spectrum of matrix operators
• Systems of Singular Differential Operators of Mixed Order and Applications to 1 - Dimensional MHD Problems
• Spectral theory of some matrix differential operators of mixed order
• The Essential Spectrum of Some Matrix Operators
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