Results 101 to 110 of about 2,806 (244)

On m-complex-self-adjoint operators

open access: yesAnnals of Functional Analysis
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Muneo Chō, Ji Eun Lee
openaire   +1 more source

The square root of a positive self-adjoint operator

open access: yesJournal of the Australian Mathematical Society, 1968
S. Bernau
semanticscholar   +1 more source

ON THE DIFFERENCE BETWEEN HERMITIAN OPERATORS AND SELF-ADJOINT OPERATORS

open access: yesMomento, 2013
We explore the difference between the notions of hermitian and self-adjoint operator, illustrating with examples its relevance for the correct description of quantum systems.
Karen M. Fonseca, Fabián Torres-Ardila
doaj  

Well-posedness of an elliptic equation with involution

open access: yesElectronic Journal of Differential Equations, 2015
In this article, we study a mixed problem for an elliptic equation with involution. This problem is reduced to boundary value problem for the abstract elliptic equation in a Hilbert space with a self-adjoint positive definite operator. Operator tools
Allaberen Ashyralyev   +1 more
doaj  

A difference scheme for Cauchy problem for the hyperbolic equation with self-adjoint operator

open access: yesMathematical and computer modelling, 2010
A. Ashyralyev, M. E. Koksal, R. Agarwal
semanticscholar   +1 more source

Some spectral properties of a generalized Friedrichs model

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011
We consider self-adjoint generalized Friedrichs model h(p), p ∈ T3 (T3 is the threedimensional torus), in the case where the parameter functions w1 and w2 of this operator has the special forms.
Tulkin Kh Rasulov, Khalim Kh Turdiev
doaj  

Products of self-adjoint operators.

open access: yesMichigan Mathematical Journal, 1969
Radjavi, Heydar, Williams, James P.
openaire   +2 more sources

An abstract approach to some spectral problems of direct sum differential operators

open access: yesElectronic Journal of Differential Equations, 2003
In this paper, we study the common spectral properties of abstract self-adjoint direct sum operators, considered in a direct sum Hilbert space. Applications of such operators arise in the modelling of processes of multi-particle quantum mechanics ...
Maksim S. Sokolov
doaj  

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