Found 31 Documents (Results 1–31)
Representations of closed quadratic forms associated with Stieltjes and inverse Stieltjes holomorphic families of linear relations. (English) Zbl 1513.47004
An extension of the first eigen-type Ambarzumyan theorem. (English) Zbl 1474.34087
Reviewer: Anatoly N. Kochubei (Kyïv)
Scattering problem for Dirac system with nonlocal potentials. (English) Zbl 1449.47025
Reviewer: Anatoly N. Kochubei (Kyïv)
On Barcilon’s formula for Krein’s string. (English) Zbl 1399.34046
Reviewer: Anatoly N. Kochubei (Kyïv)
On nonsymmetric rank one singular perturbations of selfadjoint operators. (English) Zbl 1363.47025
Reviewer: Anatoly N. Kochubei (Kyïv)
Inverse moment problem for non-Abelian Coxeter double Bruhat cells. (English) Zbl 1363.47056
Reviewer: Anatoly N. Kochubei (Kyïv)
Inverse spectral problems for Jacobi matrix with finite perturbed parameters. (English) Zbl 1363.47057
Reviewer: Anatoly N. Kochubei (Kyïv)
Spectral problem for a graph of symmetric Stieltjes strings. (English) Zbl 1313.39031
Reviewer: Anatoly N. Kochubei (Kyïv)
Trace formulae for Schrödinger operators on metric graphs with applications to recovering matching conditions. (English) Zbl 1313.34093
Reviewer: Anatoly N. Kochubei (Kyïv)
On inverse spectral problems for self-adjoint Dirac operators with general boundary conditions. (English) Zbl 1313.34047
Reviewer: Anatoly N. Kochubei (Kyïv)
Schrödinger operators with nonlocal potentials. (English) Zbl 1289.34237
Reviewer: Anatoly N. Kochubei (Kyïv)
Trace formulae for graph Laplacians with applications to recovering matching conditions. (English) Zbl 1289.34088
Reviewer: A. N. Kochubei (Kyïv)
One remark concerning double-infinite Toda lattice. (English) Zbl 1289.37042
Reviewer: A. N. Kochubei (Kyïv)
Sectorial classes of inverse Stieltjes functions and \(L\)-systems. (English) Zbl 1258.47019
Reviewer: Anatoly N. Kochubei (Kyïv)
On characteristic functions of operators on equilateral graphs. (English) Zbl 1265.34114
Reviewer: A. N. Kochubei (Kyïv)
Recovering arbitrary order differential operators on noncompact star-type graphs. (English) Zbl 1249.34047
Reviewer: A. N. Kochubei (Kyïv)
Inverse eigenvalue problems for nonlocal Sturm-Liouville operators on a star graph. (English) Zbl 1249.34044
Reviewer: A. N. Kochubei (Kyïv)
Inverse spectral problem for some generalized Jacobi Hermitian matrices. (English) Zbl 1199.47140
Reviewer: Anatoly N. Kochubei (Kyïv)
Inverse scattering problem on the axis for the triangular \(2\times 2\) matrix potential with a virtual level. (English) Zbl 1199.81038
Reviewer: A. N. Kochubei (Kyïv)
Inverse eigenvalue problems for nonlocal Sturm-Liouville operators. (English) Zbl 1199.34028
Reviewer: A. N. Kochubei (Kyïv)
On the approximation to solutions of operator equations by the least squares method. (English) Zbl 1164.65019
Reviewer: Anatoly N. Kochubei (Kyïv)
Inverse spectral problem for a star graph of Stieltjes strings. (English) Zbl 1164.34039
Reviewer: Anatoly N. Kochubei (Kyïv)
The direct and inverse spectral problems for \((2N+1)\)-diagonal complex transposition-antisymmetric matrices. (English) Zbl 1164.47036
Reviewer: Anatoly N. Kochubei (Kyïv)
Inverse spectral problem for coupled oscillating systems; reconstruction from three spectra. (English) Zbl 1150.34314
Reviewer: A. N. Kochubei (Kyïv)
Borg-type theorems for generalized Jacobi matrices and trace formulas. (English) Zbl 1122.15016
Reviewer: Anatoly N. Kochubei (Kyïv)
Continuation of Hermitian indefinite functions and corresponding canonical systems: an example. (English) Zbl 1066.47010
Reviewer: Anatoly N. Kochubei (Kyïv)
An inverse problem for point inhomogeneities. (English) Zbl 0964.35174
Reviewer: A.N.Kochubei (Kyïv)
On inverse problem in the Lax-Phillips scattering theory for a class of second-order operator-differential equations. (English) Zbl 0953.47005
Reviewer: A.N.Kochubei (Kyïv)
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