On a necessary condition of convergence of spectral expansions corresponding to the Dirac operators

2025/06/20 by Makin, Alexander
#FOS: Mathematics #Primary: 34L40 #Secondary: 34L10 #Spectral Theory (math.SP)

paper · doi:10.48550/arxiv.2506.17102

Abstract

The paper is concerned with the basis properties of root function systems of the Dirac operator with a complex-valued summable potential. We establish a necessary condition of convergence of corresponding spectral expansions.

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