Geodesic
Global solvability of the inverse spectral problem for differential systems on a finite interval
Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, Tome 24 (2024) no. 2, pp. 200-208

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The inverse spectral problem is studied for non-selfadjoint systems of ordinary differential equations on a finite interval. We provide necessary and sufficient conditions for the global solvability of the inverse problem, along with an algorithm for constructing its solution. For solving this nonlinear inverse problem, we develop ideas of the method of spectral mappings, which allows one to construct the potential matrix from the given spectral characteristics and establish conditions for the global solvability of the inverse problem considered. 
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     title = {Global solvability of the inverse spectral problem for differential systems on a finite interval},
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V. A. Yurko. Global solvability of the inverse spectral problem for differential systems on a finite interval. Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, Tome 24 (2024) no. 2, pp. 200-208. http://geodesic.mathdoc.fr/item/ISU_2024_24_2_a4/