2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/74694We study spectrum inclusion regions for complex Jacobi matrices which are compact perturbations of real periodic Jacobi matrices. The condition sufficient for the lack of discrete spectrum for such matrices is givenLaTeX, 16 pagesSpectral Theory47B36; 39A70; 34L25The discrete spectrum for complex perturbations of periodic Jacobi matricestext