• A boundary jumps phenomenon in the integral boundary value problem for singularly perturbed differential equations 

  Bukanay, N.U.; Mirzakulova, A.E.; Dauylbayev, M.K.; Konisbayeva, K.T. (KSU Publ., 2020-06-30)

  The article is devoted to the study of the asymptotic behavior of solving an integral boundary value problem for a third-order linear differential equation with a small parameter for two higher derivatives, provided that ...
• Generalization of one theorem of F. Riesz to some other spaces 

  Bitimkhan, S.; Alibieva, D.T. (KSU Publ., 2020-06-30)

  It is known from the analysis course that in order a function to serve as an undefined integral of a summable function, it is necessary and sufficient that it be absolutely continuous. Therefore, it is natural to raise ...
• The first with displacement problem for a third-order parabolic-hyperbolic equation and the effect of inequality of characteristics as data carriers of the Tricomi problem 

  Balkizov, Zh.A.; Guchaeva, Z.Kh.; Kodzokov, A.Kh. (KSU Publ., 2020-06-30)

  As part of this scientific work, we study a displacement boundary value problem for a third-order parabolichyperbolic type equation with a third-order parabolic equation backward in time and a wave equation in the domain ...
• The Cauchy problem for the Navier-Stokes equations 

  Akysh (Akishev), A.Sh. (KSU Publ., 2020-06-30)

  Ch. Fefferman in his works two problems for Navier-Stokes equations are set out: one of them is the Cauchy problem and he considers ¾only those solutions that are infinitely smooth functions are physically meaningful¿. ...
• On boundary value problems for essentially loaded parabolic equations in bounded domains 

  Akhmanova, D.M.; Shamatayeva, N.K.; Kasymova, L.Zh. (KSU Publ., 2020-06-30)

  In the paper we study issues of a strong solution for "essentially" loaded differential equations of the parabolic type in bounded domains. Features of the problems under consideration: for example, in the L2(Q) space ...

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