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47B36 Jacobi (tridiagonal) operators (matrices) and generalizations (2 articles)

• Giscard, Pierre-Louis; Pozza, Stefano: Lanczos-like algorithm for the time-ordered exponential: The $\ast $-inverse problem. (English). Applications of Mathematics, vol. 65 (2020), issue 6, pp. 807-827
• Allahverdiev, B. P.: Extensions, dilations and functional models of infinite Jacobi matrix. (English). Czechoslovak Mathematical Journal, vol. 55 (2005), issue 3, pp. 593-609