Add to ORKGTyt. z nagł.References p. 412-414.Dostępny również w formie drukowanej.KEYWORDS: Differential operator, formally normal and normal operator, multipoint minimal and maximal operators, extension, selfadjoint, accretive and unitary operators, class of compact operators, spectrum of an operators and its discreteness, asymptotics of eigenvalues, direct sum of spaces and operators. ABSTRACT: In this paper we discuss all normal extensions of a minimal operator generated by a linear multipoint differential-operator expression of first order in the Hilbert space of vector-functions on the finite interval in terms of boundary and interior point values. Later on, we investigate the structure of the spectrum, its discreteness and the asymptotic behavio...
AbstractFor a bounded linear operator T:H→H with dense range on the Hilbert space H,x0∈H and ∥x0∥>ϵ>...
Multiparameter Spectral Theory covers a broad class of problems linked to operator families dependi...
AbstractLet A and B be normal operators on a Hilbert space. Let KA and KB be subsets of the complex ...
In this paper we discuss all normal extensions of a minimal operator generated by a linear multipoin...
In this work, we describe all normal extensions of a multipoint minimal operators generated by line...
Based on methods of operator theory, we describe all boundedly solvable extensions of the minimal o...
AbstractIn this work, firstly we describe all normal extensions of a minimal operator generated by l...
This article describes all selfadjoint extensions of the minimal operator generated by a linear sin...
AbstractIn this work, firstly we describe all normal extensions of a minimal operator generated by l...
In this work, based on the Everitt-Zettl and Calkin-Gorbachuk methods in terms of boundary values al...
In this work under the condition A−1 ∈ C∞(H), we investigate the discreteness of spectrum of normale...
In this work, we first describe all the maximal hyponormal extensions of a minimal operator generate...
Based on Calkin-Gorbachuk method, we describe all selfadjoint extensions of the minimal operator ge...
In this article, we give a representation of all selfadjoint extensions of the minimal operator gene...
In this article, we give a representation of all selfadjoint extensions of the minimal operator gene...
AbstractFor a bounded linear operator T:H→H with dense range on the Hilbert space H,x0∈H and ∥x0∥>ϵ>...
Multiparameter Spectral Theory covers a broad class of problems linked to operator families dependi...
AbstractLet A and B be normal operators on a Hilbert space. Let KA and KB be subsets of the complex ...
In this paper we discuss all normal extensions of a minimal operator generated by a linear multipoin...
In this work, we describe all normal extensions of a multipoint minimal operators generated by line...
Based on methods of operator theory, we describe all boundedly solvable extensions of the minimal o...
AbstractIn this work, firstly we describe all normal extensions of a minimal operator generated by l...
This article describes all selfadjoint extensions of the minimal operator generated by a linear sin...
AbstractIn this work, firstly we describe all normal extensions of a minimal operator generated by l...
In this work, based on the Everitt-Zettl and Calkin-Gorbachuk methods in terms of boundary values al...
In this work under the condition A−1 ∈ C∞(H), we investigate the discreteness of spectrum of normale...
In this work, we first describe all the maximal hyponormal extensions of a minimal operator generate...
Based on Calkin-Gorbachuk method, we describe all selfadjoint extensions of the minimal operator ge...
In this article, we give a representation of all selfadjoint extensions of the minimal operator gene...
In this article, we give a representation of all selfadjoint extensions of the minimal operator gene...
AbstractFor a bounded linear operator T:H→H with dense range on the Hilbert space H,x0∈H and ∥x0∥>ϵ>...
Multiparameter Spectral Theory covers a broad class of problems linked to operator families dependi...
AbstractLet A and B be normal operators on a Hilbert space. Let KA and KB be subsets of the complex ...