ISSN 1817-2172, рег. Эл. № ФС77-39410, ВАК

Differential Equations and Control Processes
(Differencialnie Uravnenia i Protsesy Upravlenia)

The Influence of Non-isolated Singularities in the Lowest Coefficient of the Generalized Cauchy-riemann Equation on the Formulation of Boundary Value Problems

Author(s):

Abdurauf Babajanovich Rasulov

Doctor of Physical and Mathematical Sciences, Professor of the Department of Higher Mathematics, National Research University "Moscow Power Engineering Institute"

rasulzoda55@gmail.com

Abstract:

The article reveals the effect of the influence of pairwise non-intersecting and not passing through the origin of coordinates of non-isolated singularities in the lowest coefficient of the generalized Cauchy-Riemann equation on the formulation of boundary value problems. The condition at the boundary of the region turned out to be insufficient to solve such problems. Therefore, we considered a case that combines elements of the Riemann-Hilbert problems on the boundary of a domain and linear conjugation on the surrounding area.

Keywords

References:

  1. Bitsadze A. V. Some classes of partial differential equations. Moscow: Nauka Publ., 1981
  2. Smirnov M. M. Degenerating hyperbolic equations. Minsk: Vysshaya Shkola Publishing House, 1997
  3. Lomov S. A., Lomov I. S. Osnovy matematicheskoi teorii pogranichnogo sloya [Fundamentals of the mathematical theory of the boundary layer]. Moscow: ИздIzd. Moskovskogo universiteta, 2011
  4. Vekua I. N. Generalized analytical functions, Moscow: Fizmatgiz Publ., 1959
  5. Soldatov A. P. Singular integral operators and elliptic boundary value problems. SMFN. 2017. Vol. 63, No. 1
  6. Radjabov N. R. Introduction to the theory of partial differential equations with supersingular coefficients. Dushanbe: TSU Publishing House, 1992
  7. Mikhailov L. G. New classes of singular integral equations and their application to differential equations with singular coefficients. Dushanbe: Tajik National Research Institute, 1963
  8. Usmanov Z. D. Generalized Cauchy-Riemann systems with a singular point. Dushanbe: AN Taj PublishingHouse. SSR, 1993
  9. Geintz O. M., Solov'ev Yu. I. Stress state of an elastic space with a toroidal cavity. Applied mechanics and theoretical physics. 2004. Vol. 45, No. 1, 73-83. }
  10. Radjabov N. R. Introduction to the theory of partial differential equations with supersingular coefficients. Dushanbe: Изд-воTSU Publishing House, 1992
  11. Meziani A. Representation of solutions of a singular CR equation in the plane. Complex Var. and Elliptic Eq. 2008. Vol. 53. P. 1111-1130
  12. Abdymanapov S. A., Tungatarov A. B. Some classes of elliptic systems in the plane with singular coefficients. Almaty: " Nauka". 2005
  13. Korovina M. V. Differential equations with conic degeneracy in spaces with asymptotics. Diff. equations. 2009. Vol 45. 45, No. 9, pp. 1249-1258
  14. Klimentov S. B. On bends of a model surface of positive curvature with an isolated flattening point. Izvestiya Vuzov. North Caucasus region. Natural sciences. 1997. No. 1, pp. 15-18
  15. Begehr H, Dao-Qing Dai. On continuous solutions of a generalized Cauchy-Riemann system with more than one singularity. J. Differential Equations. 2004. Vol. 196. P. 67-90
  16. Soldatov A. P. Kpay problem of linear сопpяжения approximation of the theorypии of functions. Izv. AN SSSR. Ser. mat. 1979. Vol. 43. no. 1. P 184-202
  17. Muskhelishvili N. I. Singular integral equations, Moscow: Nauka Publ., 1968, 511 p
  18. Gakhov F. D. Boundary value problems. Moscow: Nauka Publ., 1977, 640 p
  19. Pale R. Seminar on the Atiyah-Singer index theorem. , Moscow: Mir Publ., 1970
  20. Rasulov A. B. Representation of the General Solutionof an Equation of the Cauchy-Riemann Type with a Supersingular Circle and a Singular Point. Differentsial’nye Uravneniya. 2017. Vol. 53. No. 6. P. 814-822
  21. Rasulov A. B., Bobojonova M. A., Fedorov Yu. S. Representation of the general solution of a Cauchy-Riemann type equation with a singular circle and a singular point. Differential equations of control processes. 2016. No. 3. pp. 1-16
  22. Rasulov A. B., Soldatov A. P. Boundary value problem for the generalized Cauchy-Riemann equation with singular coefficients. Diff. equations. 2016. Vol. 52, no. 5. pp. 637-650

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