Perturbation of closed operators and their adjoints
From MaRDI portal
Publication:2561369
DOI10.1007/BF02567350zbMath0263.47015MaRDI QIDQ2561369
Publication date: 1970
Published in: Commentarii Mathematici Helvetici (Search for Journal in Brave)
Full work available at URL: https://eudml.org/doc/139455
Related Items
Self-adjoint elliptic operators with boundary conditions on not closed hypersurfaces ⋮ Generalized spin-boson models with non-normalizable form factors ⋮ The proper dissipative extensions of a dual pair ⋮ Symmetry of the quadratic numerical range and spectral inclusion properties of Hamiltonian operator matrices ⋮ On the normality of the sum of two normal operators ⋮ Convergence of sequences of linear operators and their spectra ⋮ Certain properties involving the unbounded operators \(p(T)\), \(TT^\ast\), and \(T^\ast T\); and some applications to powers and \textit{nth} roots of unbounded operators ⋮ On invertible nonnegative Hamiltonian operator matrices ⋮ The index formula and the spectral shift function for relatively trace class perturbations ⋮ Everything is possible for the domain intersection dom \(T \cap\) dom \(T^\ast\) ⋮ Relativ co-stetige Operatoren in normierten Räumen ⋮ Invertibility of nonnegative Hamiltonian operator with unbounded entries ⋮ Symplectic self-adjointness of infinite dimensional Hamiltonian operators ⋮ On symplectic self-adjointness of Hamiltonian operator matrices ⋮ Stability of deficiency indices ⋮ On nonlinear mappings of monotone type homotopic to odd operators ⋮ Holomorphic operator families and stability of selfadjointness ⋮ Closedness of ranges of unbounded upper triangular operator matrices ⋮ Spectral inclusion by the quadratic numerical range of 2 x 2 operator matrices with unbounded entries
