Results 161 to 170 of about 73,171 (204)
Arrow of Time in Quantum Mechanics and Set Theory. [PDF]
Entropy (Basel)Król J.
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Time-dependent Bivariational Principle: Theoretical Foundation for Real-Time Propagation Methods of Coupled-Cluster Type. [PDF]
J Phys Chem AKvaal S +3 more
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1997
Abstract The main results of the earlier chapter can be applied to those symmetric operators which are restrictions of self-adjoint operators. Therefore it is of interest to know which symmetric operators admit a self-adjoint extension. We shall now deal with this question. In this context let H be a complex Hilbert space.
Reinhold Meise, Dietmar Vogt
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Abstract The main results of the earlier chapter can be applied to those symmetric operators which are restrictions of self-adjoint operators. Therefore it is of interest to know which symmetric operators admit a self-adjoint extension. We shall now deal with this question. In this context let H be a complex Hilbert space.
Reinhold Meise, Dietmar Vogt
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Fractional Sturm–Liouville Equations: Self-Adjoint Extensions
Complex Analysis and Operator Theory, 2018zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Niyaz Tokmagambetov, Berikbol T. Torebek
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2011
In this chapter we consider quasi-self-adjoint extensions of, generally speaking, non-densely defined symmetric operators and establish analogues of von Neumann’s and \({\rm Krasnoselski\breve{i}^\prime s}\) formulas in cases of direct and indirect decompositions of their domains.
Yuri Arlinskii +2 more
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In this chapter we consider quasi-self-adjoint extensions of, generally speaking, non-densely defined symmetric operators and establish analogues of von Neumann’s and \({\rm Krasnoselski\breve{i}^\prime s}\) formulas in cases of direct and indirect decompositions of their domains.
Yuri Arlinskii +2 more
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Non-Self-Adjoint Extensions of Symmetric Operators
Journal of Mathematical Sciences, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Self‐adjoint extensions for singular linear Hamiltonian systems
Mathematische Nachrichten, 2011AbstractThis paper is concerned with self‐adjoint extensions for singular linear Hamiltonian systems. The domain of the closure of the corresponding minimal Hamiltonian operator is described by the properties of its elements at the endpoints of the discussed interval, and two different decompositions of the domain of the corresponding maximal ...
Sun, Huaqing, Shi, Yuming
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Kreı̆n-Višik-Birman Self-Adjoint Extension Theory Revisited
2020The core results of the Krein-Visik-Birman theory of self-adjoint extensions of semi-bounded symmetric operators are reproduced, both in their original and in a more modern formulation, with a comprehensive discussion that includes missing details, elucidative steps, and intermediate results of independent interest.
Gallone M., Michelangeli A., Ottolini A.
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Russian Physics Journal, 2008
Let \(\widehat f^{(0)}\) be the initial symmetric operator with a given self-adjoint (SA) differential expression \(\breve f\), associated with \(L^2(a,b)\), and \(\widehat f^*= [\widehat f^{(0)}]^+\) be its adjoint with the domain \(D_*\). Any \(\psi_*\in D_*\) is reepresented as \(\psi_*= \psi+\psi_++ \psi_-\); \(\psi\in D_f\), \(\psi_+\in D_ ...
Voronov, B. L. +2 more
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Let \(\widehat f^{(0)}\) be the initial symmetric operator with a given self-adjoint (SA) differential expression \(\breve f\), associated with \(L^2(a,b)\), and \(\widehat f^*= [\widehat f^{(0)}]^+\) be its adjoint with the domain \(D_*\). Any \(\psi_*\in D_*\) is reepresented as \(\psi_*= \psi+\psi_++ \psi_-\); \(\psi\in D_f\), \(\psi_+\in D_ ...
Voronov, B. L. +2 more
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Potential Analysis, 1999
The article is a supplement of a result by \textit{F. Gesztesy} and \textit{B. Simon} [J. Funct. Anal. 128, No. 1, 245-252 (1995; Zbl 0828.47009)]. They showed the existence of the strong resolvent limit \(A_{\infty,g}\) obtained from \(A_{\alpha,g}= A+\alpha\langle.,g\rangle g\) as \(\alpha\to\infty\), where \(A\) is a self-adjoint positive operator ...
Albeverio, Sergio +1 more
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The article is a supplement of a result by \textit{F. Gesztesy} and \textit{B. Simon} [J. Funct. Anal. 128, No. 1, 245-252 (1995; Zbl 0828.47009)]. They showed the existence of the strong resolvent limit \(A_{\infty,g}\) obtained from \(A_{\alpha,g}= A+\alpha\langle.,g\rangle g\) as \(\alpha\to\infty\), where \(A\) is a self-adjoint positive operator ...
Albeverio, Sergio +1 more
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