Zagorodnyuk, S.M.
(Symmetry, Integrability and Geometry: Methods and Applications, 2017)
In this paper we study the inverse spectral problem for Jacobi-type pencils. By a Jacobi-type pencil we mean the following pencil J₅−λJ₃, where J₃ is a Jacobi matrix and J₅ is a semi-infinite real symmetric five-diagonal ...