Electronic catalog
Genre:Прикладные науки. Общие вопросы. Техника (technics_IT)
publication type:periodical press (Magazines)
catalogue:Articles
Search result:
2091-2100 of 2261
![](/FileStore/dataFiles/77/d1/1690995/content/cover.png?time=1718537551788&key=cd32d3ce022200c200ecf2dbf8a78a65)
periodical press (Magazines)
HEZENCI F.
Hezenci, F. A remark on Schottky representations and Reidemeister torsion [Text] / F. Hezenci, Y. Sozen // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 81-93. - Bibliogr.: p. 91-92 ISSN 2518-7929.
UDC:
515.1
Subject headings
- Topology
Annotation
The present paper establishes a formula of Reidemeister torsion for Schottky representations
Keywords
Schottky representation, Reidemeister torsion, representation varieties, Atiyah-Bott-Goldman symplectic form, Thurston symplectic form
Kazakhstan
0/0 Free
![](/FileStore/dataFiles/2e/3e/1690993/content/cover.png?time=1718537551788&key=9e2b8bb42446371240805fdc5d0dd857)
periodical press (Magazines)
BURANAY S. C.
Buranay, S. C. Solution of heat equation by a novel implicit scheme using block hybrid preconditioning of the conjugate gradient method [Text] / S. C. Buranay, N. Arshad // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 58-80. - Bibliogr.: p. 77-79 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
The main goal of the study is the approximation of the solution to the Dirichlet boundary value problem (DBVP) of the heat equation on a rectangle by developing a new difference method on a grid system of hexagons
Keywords
heat equation, implicit scheme, hexagonal grid, stability analysis, symmetric positive definite matrix, approximate inverse, incomplete block factorization, block hybrid preconditioning, conjugate gradient method
Kazakhstan
0/0 Free
![](/FileStore/dataFiles/20/b9/1690977/content/cover.png?time=1718537551788&key=35db57f52851a0d922fb65272a4c7a74)
periodical press (Magazines)
ARIPOV M. M.
Aripov, M. M. On convergence of difference schemes of high accuracy for one pseudo-parabolic Sobolev type equation [Text] / M. M. Aripov, D. Utebaev , M. M. Kazimbetova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 24-37. - Bibliogr.: p. 34-35 ISSN 2518-7929.
UDC:
517.95:519.6
Subject headings
- Differential equations. Computational mathematics
Annotation
Difference schemes of the finite difference method and the finite element method of high-order accuracy in time and space are proposed and investigated for a pseudo-parabolic Sobolev type equation
Keywords
pseudo-parabolic equation, difference schemes, finite difference method, finite element method, generalized solutions, a priori estimates, stability, convergence, accuracy
Kazakhstan
0/0 Free
![](/FileStore/dataFiles/3a/19/1690981/content/cover.png?time=1718537551788&key=b5103d4182f914ce2b82d4de2f5e3d59)
periodical press (Magazines)
ASHYRALYEV А.
Ashyralyev, А. On the hyperbolic type differential equation with time involution [Text] / А. Ashyralyev, А. Ashyralyyev , B. Abdalmohammed // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 38-47. - Bibliogr.: p. 44-45 ISSN 2518-7929.
UDC:
517.28
Subject headings
- Involutory type hyperbolic equation
Annotation
In the present paper, the initial value problem for the hyperbolic type involutory in t second order linear partial differential equation is studied
Keywords
stability, Banach space, partial differential equation, hyperbolic differential equations, differential operator
Kazakhstan
0/0 Free
![](/FileStore/dataFiles/53/d0/1078823/content/cover.png?time=1718537551800&key=0cac7ca23558c4cc61b2522fc99f5503)
periodical press (Magazines)
ТОКМУРЗИЕВ М. Т.
Токмурзиев, М. Т. Государственное управление нефтяным комплексом в Республике Казахстан [Текст] / М. Т. Токмурзиев // Транзитная экономика. - 2013. - № 1. - С. 78-82
. ISSN 2413-4953.
UDC:
622.323(574)
Subject headings
- Нефтегазовая промышленность Казахстана
Annotation
В статье освещаются вопросы и проблемы государственного управления нефтяной промышленностью в Казахстане
Keywords
нефтегазовый сектор, государственное управление, нефтяные компании, управление нефтяным комплексом, нефтегазовая промышленность
Kazakhstan
0/0 Free
![](/FileStore/dataFiles/07/0a/1691132/content/cover.png?time=1718537551800&key=bebd45db2184440ecc89ba8fd3b12868)
periodical press (Magazines)
SALIM S. H.
Salim, S. H. Solving Volterra-Fredholm integral equations by natural cubic spline function [Text] / S. H. Salim, K. H.F. Jwamer , R. K. Saeed // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 124-130. - Bibliogr.: p. 128-129 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
Using the natural cubic spline function, this paper finds the numerical solution of Volterra-Fredholm integral equations of the second kind
Keywords
Volterra integral equation, Fredholm integral equation, spline function
Kazakhstan
0/0 Free
![](/FileStore/dataFiles/b8/2d/1691140/content/cover.png?time=1718537551800&key=d16ef731ab7235e7a3ea1bdf5b18ec9c)
periodical press (Magazines)
SINSOYSAL B.
Sinsoysal, B. Numerical method to solution of generalized model Buckley-Leverett in a class of discontinuous functions [Text] / B. Sinsoysal, M. Rasulov , R. Iskenderova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 131-140. - Bibliogr.: p. 137-138 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
A new numerical method is proposed for solving the generalized Buckley-Leverett problem, which describes the movement of two-phase mixtures of Bazhenov bed sediments in a class of discontinuous functions
Keywords
generalized Buckley-Leverett problem, auxiliary problem, finite differences method, nonlinear differential equations
Kazakhstan
0/0 Free
![](/FileStore/dataFiles/79/cb/1691161/content/cover.png?time=1718537551800&key=e20ac0ce0b3d5209b7fd02b875a40979)
periodical press (Magazines)
YUCEL M.
Yucel, M. Generalized differential transformation method for solving two-interval Weber equation subject to transmission conditions [Text] / M. Yucel, F. S. Muhtarov , O. Sh. Mukhtarov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 168-176. - Bibliogr.: p. 168-176 ISSN 2518-7929.
UDC:
519.62
Subject headings
- Numerical methods for solving differential equations
Annotation
The main goal of this study is to adapt the classical differential transformation method to solve new types of boundary value problems
Keywords
two-interval problems, the differential transformation method, Weber equation, transmission conditions
Kazakhstan
0/0 Free
![](/FileStore/dataFiles/7a/c6/1691128/content/cover.png?time=1718537551801&key=5d51a62983c00de4e5dbc7754f6b0bf3)
periodical press (Magazines)
MARDANOV M. J.
Mardanov, M. J. An optimal control problem for the systems with integral boundary conditions [Text] / M. J. Mardanov, Y. A. Sharifov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 119-121. - Bibliogr.: p. 119-121 ISSN 2518-7929.
UDC:
517.97
Subject headings
- Calculus of variations and the mathematical theory of optimal control
Annotation
In this paper, an optimal control problem with a "pure", integral boundary condition is considered. The Green’s function is constructed
Keywords
integral boundary conditions, integral conditions, nonlinear boundary, singular control, optimal control problem
Kazakhstan
0/0 Free
![](/FileStore/dataFiles/32/a2/1691123/content/cover.png?time=1718537551801&key=f02fa3ba6c91b4a8b96f4cb6717da75e)
periodical press (Magazines)
KURINA G. A.
Kurina, G. A. Minimizing sequences for a linear-quadratic control problem with three-tempo variables under weak nonlinear perturbations [Text] / G. A. Kurina, M. A. Kalashnikova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 1 (109). - P. 94-109. - Bibliogr.: p. 106-107 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
The paper deals with the construction of minimizing sequences for the problem of minimizing a weakly nonlinearly perturbed quadratic performance index on trajectories of a weakly nonlinear system with threetempo state variables
Keywords
three-tempo variables, nonlinear control problems, asymptotic estimates, minimizing sequences, differential equations
Kazakhstan
0/0 Free
periodical press (Magazines)
0/0 Free
BURANAY S. C.
SOLUTION OF HEAT EQUATION BY A NOVEL IMPLICIT SCHEME USING BLOCK HYBRID PRECONDITIONING OF THE CONJUGATE GRADIENT METHOD
periodical press (Magazines)
0/0 Free
ARIPOV M. M.
ON CONVERGENCE OF DIFFERENCE SCHEMES OF HIGH ACCURACY FOR ONE PSEUDO-PARABOLIC SOBOLEV TYPE EQUATION
periodical press (Magazines)
0/0 Free
ASHYRALYEV А.
ON THE HYPERBOLIC TYPE DIFFERENTIAL EQUATION WITH TIME INVOLUTION
periodical press (Magazines)
0/0 Free
ТОКМУРЗИЕВ М. Т.
ГОСУДАРСТВЕННОЕ УПРАВЛЕНИЕ НЕФТЯНЫМ КОМПЛЕКСОМ В РЕСПУБЛИКЕ КАЗАХСТАН
periodical press (Magazines)
0/0 Free
SALIM S. H.
SOLVING VOLTERRA-FREDHOLM INTEGRAL EQUATIONS BY NATURAL CUBIC SPLINE FUNCTION
periodical press (Magazines)
0/0 Free
SINSOYSAL B.
NUMERICAL METHOD TO SOLUTION OF GENERALIZED MODEL BUCKLEY-LEVERETT IN A CLASS OF DISCONTINUOUS FUNCTIONS
periodical press (Magazines)
0/0 Free
YUCEL M.
GENERALIZED DIFFERENTIAL TRANSFORMATION METHOD FOR SOLVING TWO-INTERVAL WEBER EQUATION SUBJECT TO TRANSMISSION CONDITIONS
periodical press (Magazines)
0/0 Free
MARDANOV M. J.
AN OPTIMAL CONTROL PROBLEM FOR THE SYSTEMS WITH INTEGRAL BOUNDARY CONDITIONS
periodical press (Magazines)
0/0 Free
KURINA G. A.
MINIMIZING SEQUENCES FOR A LINEAR-QUADRATIC CONTROL PROBLEM WITH THREE-TEMPO VARIABLES UNDER WEAK NONLINEAR PERTURBATIONS
periodical press (Magazines)
0/0 Free