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JOURNALS // Doklady Rossijskoj Akademii Nauk. Mathematika, Informatika, Processy Upravlenia // Archive

Dokl. RAN. Math. Inf. Proc. Upr., 2024 Volume 516, Pages 93–97 (Mi danma519)

MATHEMATICS

Inversion problem for Radon transforms defined on pseudoconvex sets

D. S. Anikonov, D. S. Konovalova

Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

Abstract: Some questions concerning the inversion of the classical and generalized integral Radon transforms are discussed. The main issue is to determine information about the integrand if the values of some integrals are known. A feature of this work is that a function is integrated over hyperplanes in a finite-dimensional Euclidean space and the integrands depend not only on the variables of integration, but also on some of the variables characterizing the hyperplanes. The independent variables describing the known integrals are fewer than those in the unknown integrand. We consider discontinuous integrands defined on specifically introduced pseudoconvex sets. A Stefan-type problem of finding discontinuity surfaces of the integrand is posed. Formulas for solving the problem under study are derived by applying special integro-differential operators to known data.

Keywords: generalized Radon transform, integral geometry, probing, tomography, differential equation, discontinuous functions.

UDC: 517.44

Presented: V. G. Romanov
Received: 05.02.2024
Revised: 04.04.2024
Accepted: 04.04.2024

DOI: 10.31857/S2686954324020151


 English version:
Doklady Mathematics, 2024, 109:2, 175–178

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© Steklov Math. Inst. of RAS, 2025