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DOI: 10.23671/VNC.2017.3.7259

Linear Problem of Integral Ggeometry with Smooth Weight Functions and Perturbation

Begmatov A. H. , Djaykov G. M.
Vladikavkaz Mathematical Journal 2015. Vol. 17. Issue 3.
Abstract:
We study two problems of integral geometry in a strip on a family of line segments with a given weight function. In the first case, we consider the problem of reconstruction a function in a strip, if we know the integrals of the sought function on the family of line segments with a given weight function of a~special kind. An analytical representation of a solution in the class of smooth finite functions is obtained and the uniqueness and existence theorems for a solution of the problem are proved. A stability estimate of solution in Sobolev spaces is presented, which implies its weakly ill-posedness. For the problem with perturbation the uniqueness theorem and stability estimate of solution were obtained. In the second case, we considered the problem of reconstructing a function given by integral data on the family of line segments with a~weight function of exponential type. The uniqueness and existence theorems of a solution are proved. A simple representation of a solution in the class of smooth finite functions is constructed. Next, we consider the corresponding problem of integral geometry with perturbation. The uniqueness theorem in the class of smooth finite functions in a strip is proved and a stability estimate of a solution in Sobolev spaces is received.
Keywords: problems of integral geometry, Radon transform, Fourier transform, Laplace transform inversion formula, stability estimates, uniqueness of the solution, existence theorem, weakly Ill-posedness, perturbation
Language: Russian Download the full text  
For citation: Begmatov A. H., Djaykov G. M. Linear Problem† of Integral Ggeometry with Smooth Weight Functions and Perturbation. Vladikavkazskii matematicheskii zhurnal [Vladikavkaz Math. J.], vol. 17, no. 3, pp.14-22. DOI 10.23671/VNC.2017.3.7259
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