обратная задача

An inverse problem for quasilinear elliptic equations

Authors: Aliev R. A.

The article examines incorrect inverse problems in the defining unknown factors in the quasilinear elliptic equation. Theorems of existence, uniqueness and stability have been proved. The consecutive approach method is used for the construction of the regulating algorithm for defining several factors. 

Inverse problem for Sturm–Liouville operator on the half-line having nonintegrable singularity in an interior point

The inverse problem of recovering Sturm–Liouville operators on the half-line with a nonintegrable Bessel-type singularity in an interior point from the given Weyl function is studied. The corresponding uniqueness theorem is proved, a constructive procedure for the solution of the inverse problem is provided. Necessary and sufficient conditions of the solvability of the inverse problem are obtained. 

Necessary and Sufficient Conditions for the Solvability of the Inverse Problem for Sturm–Liouville Operators with a Nonintegrable Singularity Inside a Finite Interval

Authors: Fedoseev A. E.

The inverse spectral problem of recovering Sturm–Liouville operators on a finite interval with a nonintegrable Bessel-type singularity

in an interior point from the given spectral data is studied. A corresponding uniqueness theorem is proved, a constructive procedure

for the solution of the inverse problem is provided. Necessary and sufficient conditions for the solvability of the inverse problem are

obtained.

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