NEWS OF THE NATIONAL ACADEMY OF SCIENCES OF THE REPUBLIC OF KAZAKHSTAN. SERIES PHYSICO-MATHEMATICAL

• E.A. Malkov1 , S.B. Momynov2

PHASE PORTRAITS OF THE HENON-HEILES POTENTIAL     5-9

• T.T. Karakeev, N.T. Mustafayeva

THE METHOD OF NUMERICAL SOLUTION OF NONLINEAR VOLTERRA INTEGRAL EQUATIONS OF THE FIRST KIND      10-18

• S.N. Kharin1,2, S.A. Kassabek2,3, D. Salybek3 , T. Ashymov3

STEFAN PROBLEM IN ELLIPSOIDAL COORDINATES     19-24

• D.S.Dzhumabaev1,2, E.A. Bakirova1,2, Zh.M. Kadirbayeva1,2

AN ALGORITHM FOR SOLVING A CONTROL PROBLEM FOR A DIFFERENTIAL EQUATION WITH A PARAMETER     25-32

• A.T.Assanova1 , B.Zh.Alikhanova2 , K.Zh.Nazarova2

WELL-POSEDNESS OF A NONLOCAL PROBLEM WITH INTEGRAL CONDITIONS FOR THIRD ORDER SYSTEM OF THE PARTIAL DIFFERENTIAL EQUATIONS     33-41

• A.Seitmuratov1 , S.Tileubay1 , S.Toxanova1 , N.Ibragimova2 , B.Doszhanov1 , M.Zh.Aitimov1

THE PROBLEM OF THE OSCILLATION OF THE ELASTIC LAYER BOUNDED BY RIGID BOUHDARIES     42-48

• J.W. Akhmetov1 , S.M. Seitova1 , D.B. Toibazarov1 , G.T. Kadyrbayeva1 , A.U. Dauletkulova2 , G. B. Issayeva3

VERIFICATION OF RELIABILITY TECHNICAL DEVICES THROUGH RESOLVING PROBABILITY OF FAILURE AND FAILURE     49-61

• М.N.Kalimoldayev, А.А.Abdildayeva, M.A.Akhmetzhanov, F.M.Galiyeva

MATHEMATICAL MODELING OF THE PROBLEM OF OPTIMAL CONTROL OF ELECTRIC POWER SYSTEMS     62-67

• S.N. Kharin1,2, S.A. Kassabek2,3, M. Slyamkhan3

PROBLEM FROM THE THEORY OF BRIDGE EROSION     68-74

• A. А. Shaldanbaeva1 , M.I. Akylbayev2 , A. Sh. Shaldanbaev3 , A.Zh. Beisebaeva4

THE SPECTRAL DECOMPOSITION OF CAUCHY PROBLEM’S SOLUTION FOR LAPLACE EQUATION     75-87