This article is cited in 3 papers

Brief Communications

On the Discreteness of the Spectrum of Matrix Schrödinger and Dirac Operators with Point Interactions

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, deficiency indices, Schrödinger and Dirac operators, discrete spectrum, point interactions.

Received: 26.07.2021

DOI: 10.4213/mzm13234

 English version: Mathematical Notes, 2021, 110:6, 960–966

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