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Brief Communications

Self-Adjointness and Discreteness of the Spectrum of Block Jacobi Matrices

V. S. Budyka^ab, M. M. Malamud<sup>b

a</sup> Donetsk State Academy of Management
^b Peoples' Friendship University of Russia, Moscow

Keywords: Jacobi matrix, discrete spectrum, self-adjointness, deficiency indices.

Received: 18.02.2020

DOI: 10.4213/mzm12709

 English version: Mathematical Notes, 2020, 108:3, 445–450

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