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Жанр:Естественные науки (natural_sciences)
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4131-4140 из 4389
периодические издания(Журналы)
ARIPOV M. M.
Aripov, M. M. On stability of nonlinear difference equations and some of their applications [Text] / M. M. Aripov, D. Utebaev , B. D. Utebaev [et al.] // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 13-25. - Bibliogr.: p. 23-25 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
The issues of stability in solving nonlinear difference equations were considered
Ключевые слова
nonlinear difference equations, difference schemes, a priori estimates, stability, difference equations
Казахстаника
0/0 Свободно
периодические издания(Журналы)
TASKIN A.
Taskin, A. Source identification problems for the neutron transport equations [Text] / A. Taskin // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 137-149. - Bibliogr.: p. 147-149 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
In this study, the time-dependent source identification problem for the two-dimensional neutron transport equation was studied
Ключевые слова
identification problem, neutron transport equation, difference scheme, differential equation, stability inequality
Казахстаника
0/0 Свободно
периодические издания(Журналы)
VALIYEV A. A.
Valiyev, A. A. Spectrum and resolvent of multi-channel systems with internal energies and common boundary conditions [Text] / A. A. Valiyev, M. B. Valiyev , E. H. Huseynov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2025. - № 3 (115). - P. 150-157. - Bibliogr.: p. 157 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
In the article the spectrum and resolvent of the so-called multichannel systems with nonzero internal energies were investigated
Ключевые слова
eigenvalues, edge problem, Wronskian, transformation operator, asymptotics, continuous spectrum, resolvent, multi-channel systems, internal energy, quantum physics
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ABIEV N. A.
Abiev, N. A. Structural properties of the sets of positively curved Riemannian metrics on generalized Wallach spaces [Text] / N. A. Abiev // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 4-17. - Bibliogr.: p. 16-17 ISSN 2518-7929.
УДК:
512
Предметная рубрика
- Algebra
Аннотация
In the present paper sets related to invariant Riemannian metrics of positive sectional and (or) Ricci curvature on generalized Wallach spaces are considered
Ключевые слова
generalized Wallach space, Riemannian metric, Kähler metric, normalized Ricci flow, sectional curvature, Ricci curvature, dynamical system, singular point
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ASKARBEKKYZY A.
Askarbekkyzy, A. Punctual numberings for families of sets [Text] / A. Askarbekkyzy Bagaviev , V. Isakov [et al.] // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 31-40. - Bibliogr.: p. 38-40 ISSN 2518-7929.
УДК:
51
Предметная рубрика
- Mathematics
Аннотация
This work investigates the structure of punctual numberings for families of punctually enumerable sets with respect to primitive recursively reducibility
Ключевые слова
primitive recursive functions, punctually enumerable sets, Rogers semilattice, quick functions, punctual numberings
Казахстаника
0/0 Свободно
периодические издания(Журналы)
BENSASSA K.
Bensassa, K. On solution of non-linear FDE under tempered Ψ−Caputo derivative for the first-order and three-point boundary conditions [Text] / K. Bensassa, M. Benbachir , M. E. Samei [et al.] // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 41-56. - Bibliogr.: p. 54-56 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
In this article, the existence and uniqueness of solutions for non-linear fractional differential equation with Tempered Ψ−Caputo derivative with three-point boundary conditions were studied
Ключевые слова
fractional differential equations, tempered Ψ−Caputo derivative, nonlinear analysis, Schaefer’s fixed point theorem, Banach contraction
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ASHYRALYEV A.
Ashyralyev, A. The compact eighth-order of approximation difference schemes for fourth-order differential equation [Text] / A. Ashyralyev, I. M. Ibrahim // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 18-30. - Bibliogr.: p. 29-30 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
Local and nonlocal boundary value problems (LNBVPs) related to fourth-order differential equations (FODEs) were explored
Ключевые слова
Taylor’s decomposition on five points (TDFP), LNBVPs, DSs, approximation, numerical experiment
Казахстаника
0/0 Свободно
периодические издания(Журналы)
BOBODZHANOVA M. A.
Bobodzhanova, M. A. Singularly perturbed integro-differential equations with degenerate Hammerstein’s kernel [Text] / M. A. Bobodzhanova, B. T. Kalimbetov , V. F. Safonov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 57-68. - Bibliogr.: p. 66-68 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations. Integral equations
Аннотация
Singularly perturbed integro-differential equations with degenerate kernels are considered
Ключевые слова
singularly perturbed, Hammerstein’s equation, degenerate kernel, Fredholm’s equations, analytic function, Laurent’s series, passage to the limit, the Maple program
Казахстаника
0/0 Свободно
периодические издания(Журналы)
BOUSSAHA A.
Boussaha, A. A modified Jacobi elliptic functions method for optical soliton solutions of a conformable nonlinear Schrödinger equation [Text] / A. Boussaha, B. Semmar , M. Al-Smadi [et al.] // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 69-77. - Bibliogr.: p. 75-77 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
In this paper, precise and exact traveling wave solutions of the conformable differential nonlinear Schrödinger equation is studied
Ключевые слова
non-linear Schrödinger equation, conformable fractional derivative, modified Jacobi elliptic functions method, extracting optical solitons-solutions, fractional derivative
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ÖZMEN N.
Özmen, N. Advances in the generalized Cesaro polynomials [Text] / N. Özmen, E. Erkuş-Duman // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 159-169. - Bibliogr.: p. 169 ISSN 2518-7929.
УДК:
512.622
Предметная рубрика
- Polynomials
Аннотация
This paper aims to introduce a multivariable and multiparameter generalization of Cesaro polynomials
Ключевые слова
Cesaro polynomials, generating function, recurrence relation, hypergeometric function, integral representation
Казахстаника
0/0 Свободно
ARIPOV M. M.
ON STABILITY OF NONLINEAR DIFFERENCE EQUATIONS AND SOME OF THEIR APPLICATIONS
периодические издания(Журналы)
0/0 Свободно
TASKIN A.
SOURCE IDENTIFICATION PROBLEMS FOR THE NEUTRON TRANSPORT EQUATIONS
периодические издания(Журналы)
0/0 Свободно
VALIYEV A. A.
SPECTRUM AND RESOLVENT OF MULTI-CHANNEL SYSTEMS WITH INTERNAL ENERGIES AND COMMON BOUNDARY CONDITIONS
периодические издания(Журналы)
0/0 Свободно
ABIEV N. A.
STRUCTURAL PROPERTIES OF THE SETS OF POSITIVELY CURVED RIEMANNIAN METRICS ON GENERALIZED WALLACH SPACES
периодические издания(Журналы)
0/0 Свободно
периодические издания(Журналы)
0/0 Свободно
BENSASSA K.
ON SOLUTION OF NON-LINEAR FDE UNDER TEMPERED Ψ−CAPUTO DERIVATIVE FOR THE FIRST-ORDER AND THREE-POINT BOUNDARY CONDITIONS
периодические издания(Журналы)
0/0 Свободно
ASHYRALYEV A.
THE COMPACT EIGHTH-ORDER OF APPROXIMATION DIFFERENCE SCHEMES FOR FOURTH-ORDER DIFFERENTIAL EQUATION
периодические издания(Журналы)
0/0 Свободно
BOBODZHANOVA M. A.
SINGULARLY PERTURBED INTEGRO-DIFFERENTIAL EQUATIONS WITH DEGENERATE HAMMERSTEIN’S KERNEL
периодические издания(Журналы)
0/0 Свободно
BOUSSAHA A.
A MODIFIED JACOBI ELLIPTIC FUNCTIONS METHOD FOR OPTICAL SOLITON SOLUTIONS OF A CONFORMABLE NONLINEAR SCHRÖDINGER EQUATION
периодические издания(Журналы)
0/0 Свободно
периодические издания(Журналы)
0/0 Свободно