The role and essence of ill-posed problems for solving various applied problems
Keywords:
Ill-posed problems, Carleman function, Helmholtz equation, Approximate solution, Cauchy problemAbstract
In this paper, the history of the appearance of ill-posed problems and the role and essence of these problems in solving various problems of equations of mathematical physics are described in detail. At the present time, the theory and application of ill-posed problems in various fields of science is rapidly developing. When solving ill-posed problems, we will construct a Carleman function and, on its basis, we will find in an explicit form an approximate solution of the problem.
References
Tikhonov, A. N., & Arsenin, V. Y. (1974). Methods for solving ill-posed problems. Nauka, Moscow.
Tikhonov, A. N., & Arsenin, V. Y. (1977). Solutions of ill-posed problems. New York: Winston.
Carleman, T. (1926). Les fonctions quasi analytiques. Gautier-Villars et Cie., Paris.
Yarmukhamedov, Sh. (1977). On the Cauchy problem for the Laplace equation, Dokl. AN SSSR, 235:2, 281-283.
Lavrent’ev, M. M. (1957). On the Cauchy problem for second-order linear elliptic equations. Reports of the USSR Academy of Sciences. 112(2), 195-197.
Lavrent’ev, M. M. (1962). On some ill-posed problems of mathematical physics. Nauka, Novosibirsk.
Lavrent’ev M. M., Romanov V. G., & Shishatsky S. P. (1980). Ill-posed problems of mathematical physics and analysis. Nauka, Moscow.
Hadamard, J. (1978). The Cauchy problem for linear partial differential equations of hyperbolic type. Nauka, Moscow.
Yarmukhamedov, S. (1985). A Green formula in an infinite domain and its application. In Doklady Akademii Nauk (Vol. 285, No. 2, pp. 305-308). Russian Academy of Sciences.
Tarkhanov, N. N. (1995). The Cauchy problem for solutions of elliptic equations. V. 7, Akad. Verl., Berlin.
Aizenberg, L. A. (1990). Carleman’s formulas in complex analysis. Nauka, Novosibirsk.
Arbuzov, E. V., & Bukhgeim, A. L. V. (2006). The Carleman formula for the Helmholtz equation on the plane. Siberian Mathematical Journal, 47(3), 425-432.
Juraev, D. A. (2014). The construction of the fundamental solution of the Helmholtz equation. Reports of the Academy of Sciences of the Republic of Uzbekistan, (4), 14-17.
Juraev, D. A. (2016). Regularization of the Cauchy problem for systems of elliptic type equations of first order. Uzbek Mathematical Journal, (2), 61-71.
Juraev, D. A., & Noeiaghdam, S. (2021). Regularization of the ill-posed Cauchy problem for matrix factorizations of the Helmholtz equation on the plane. Axioms, 10(2), 1-14.
Juraev D. A. (2021). Solution of the ill-posed Cauchy problem for matrix factorizations of the Helmholtz equation on the plane. Global and Stochastic Analysis, 8(3), 1-17.
Juraev D. A., & Gasimov Y. S. (2022). On the regularization Cauchy problem for matrix factorizations of the Helmholtz equation in a multidimensional bounded domain. Azerbaijan Journal of Mathematics, 12(1), 142-161.
Juraev D. A. (2022). On the solution of the Cauchy problem for matrix factorizations of the Helmholtz equation in a multidimensional spatial domain. Global and Stochastic Analysis, 9(2), 1-17.
Juraev, D. A., & Noeiaghdam, S. (2022). Modern problems of mathematical physics and their applications. Axioms, 11(2), 1-6.
Juraev, D. A., & Noeiaghdam, S. (2022). Modern problems of mathematical physics and their applications. Axioms, MDPI. Switzerland, 1-352.
Juraev, D. A. & Cavalcanti, M. M. (2023). Cauchy problem for matrix factorizations of the Helmholtz equation in the space Rm, Boletim da Sociedade Paranaense de Matematica, 41(3s.), 1–12.
Juraev, D. A. (2023) The Cauchy problem for matrix factorization of the Helmholtz equation in a multidimensional unbounded domain, Boletim da Sociedade Paranaense de Matematica, 41(3s, 1-18.
Juraev, D. A., Ibrahimov, V. & Agarwal, P. (2023) Regularization of the Cauchy problem for matrix factorizations of the Helmholtz equation on a two-dimensional bounded domain, Palestine Journal of Mathematics, 12(1), 381-403.
Juraev, D. A. (2023) Fundamental solution for the Helmholtz equation, Engineering Applications, 2(2), 164-175.
Juraev, D. A., Jalalov, M. J. & Ibrahimov, V. R. (2023) On the formulation of the Cauchy problem for matrix factorizations of the Helmholtz equation, Engineering Applications, 2(2), 176-189.
Bulnes, J. D. (2022) An unusual quantum entanglement consistent with Schrödinger’s equation. . Global and Stochastic Analysis, 9(2), 79-87.
Bulnes, J. D. (2022) Solving the heat equation by solving an integro-differential equation. Global and Stochastic Analysis, 9(2), 89-97.