Geodesic
Inverse Problems for Differential Operators of Any Order on Trees
Matematičeskie zametki, Tome 83 (2008) no. 1, pp. 139-152.

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Inverse spectral problems for ordinary differential operators of any order on compact trees are studied. As the main spectral characteristics, Weyl matrices, which generalize the Weyl $m$-function for the classical Sturm–Liouville operator are introduced and studied. A constructive solution procedure for the inverse problem based on Weyl matrices is suggested, and the uniqueness of the solution is proved. The reconstruction of differential equations from discrete spectral characteristics is also considered.
Keywords: differential operator on a tree, inverse spectral problem on a tree, method of spectral mappings.
Mots-clés : Weyl solution, Weyl matrix 
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V. A. Yurko. Inverse Problems for Differential Operators of Any Order on Trees. Matematičeskie zametki, Tome 83 (2008) no. 1, pp. 139-152. http://geodesic.mathdoc.fr/item/MZM_2008_83_1_a14/

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