Geodesic
Spectra of discrete symplectic eigenvalue problems with separated boundary conditions
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 11 (2011), pp. 84-88.

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In this paper we consider a discrete symplectic eigenvalue problem with separated boundary conditions and obtain formulas for the number of eigenvalues on a given interval of the variation of the spectral parameter. In addition, we compare the spectra of two symplectic eigenvalue problems with different separated boundary conditions.
Keywords: discrete symplectic eigenvalue problems, relative oscillation theory, comparative index. 
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Yu. V. Eliseeva. Spectra of discrete symplectic eigenvalue problems with separated boundary conditions. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 11 (2011), pp. 84-88. http://geodesic.mathdoc.fr/item/IVM_2011_11_a9/

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