Lifshitz, I. M. On the theory of regular perturbations. (English) Zbl 0061.26001 C. R. (Dokl.) Acad. Sci. URSS, n. Ser. 48, 79-81 (1945). Reviewer: G. Marinescu Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 47A55 Perturbation theory of linear operators 47B15 Hermitian and normal operators (spectral measures, functional calculus, etc.) Keywords:regular perturbations; Hermitian operators PDFBibTeX XMLCite \textit{I. M. Lifshitz}, C. R. (Dokl.) Acad. Sci. URSS, n. Ser. 48, 79--81 (1945; Zbl 0061.26001)