On the essential spectrum of the Jansen-Hess operator for two-electron ions.
Jakubassa-Amundsen, D.H. (2008)
Mathematical Physics Electronic Journal [electronic only]
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Displaying similar documents to “Essential spectrum of multiparticle Brown-Ravenhall operators in external field.”
On the essential spectrum of the Jansen-Hess operator for two-electron ions.
Remarks on the spectrum of bounded and normal operators on Hilbert spaces.
Akkouchi, M. (2008)
Analele Ştiinţifice ale Universităţii “Ovidius" Constanţa. Seria: Matematică
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On orbits for pairs of operators on an infinite-dimensional complex Hilbert space
Sonja Mančevska (2007)
Kragujevac Journal of Mathematics
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The ground state energy of relativistic one-electron atoms according to Jansen and Heß.
Brummelhuis, Raymond, Siedentop, Heinz, Stockmeyer, Edgardo (2002)
Documenta Mathematica
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A note on the range of the operator defined on .
Lauric, Vasile (2009)
International Journal of Mathematics and Mathematical Sciences
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Isosceles sets.
Ionin, Yury J. (2009)
The Electronic Journal of Combinatorics [electronic only]
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Localization of the essential spectrum for relativistic -electron ions and atoms.
Jakubassa-Amundsen, D.H. (2005)
Documenta Mathematica
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On the scattering theory of the Laplacian with a periodic boundary condition. II. Additional channels of scattering.
Frank, Rupert L., Shterenberg, Roman G. (2004)
Documenta Mathematica
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On the recursive sequence .
Stević, Stevo (2007)
Discrete Dynamics in Nature and Society
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Resonance with respect to the Fučík spectrum.
Ben-Naoum, A.K., Fabry, C., Smets, D. (2000)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Oscillation of difference equations with variable coefficients.
Ocalan, Ozkan (2006)
Portugaliae Mathematica. Nova Série
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Fine spectra of tridiagonal symmetric matrices.
Altun, Muhammed (2011)
International Journal of Mathematics and Mathematical Sciences
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Asymptotic analysis of non-self-adjoint Hill operators
Oktay Veliev (2013)
Open Mathematics
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We obtain uniform asymptotic formulas for the eigenvalues and eigenfunctions of the Sturm-Liouville operators L t (q) with a potential q ∈ L 1[0,1] and t-periodic boundary conditions, t ∈ (−π, π]. Using these formulas, we find sufficient conditions on the potential q such that the number of spectral singularities in the spectrum of the Hill operator L(q) in L 2(−∞,∞) is finite. Then we prove that the operator L(q) has no spectral singularities at infinity and it is an asymptotically...