Электронный каталог
Жанр:Прикладные науки. Общие вопросы. Техника (technics_IT)
Язык издания:Английский
Каталог:Статьи
Результат поиска:
111-120 из 152
периодические издания(Журналы)
MARKHABATOV N. D.
Markhabatov, N. D. Ranks and approximations for families of cubic theories [Text] / N. D. Markhabatov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 3 (111). - P. 81-90. - Bibliogr.: p. 87-88 ISSN 2518-7929.
УДК:
510.6
Предметная рубрика
- Mathematical logic
Аннотация
In this paper, the rank characteristics for families of cubic theories, as well as new properties of cubic theories as pseudofiniteness and smooth approximability have been studied
Ключевые слова
approximation of a theory, cub, cubic structure, pseudofinite theory, smoothly approximated structure
Казахстаника
0/0 Свободно
периодические издания(Журналы)
YESHKEYEV A. R.
Yeshkeyev, A. R. On categoricity questions for universal unars and undirected graphs under semantic Jonsson quasivariety [Text] / A. R. Yeshkeyev, A. R. Yarullina , S. M. Amanbekov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 3 (111). - P. 165-180. - Bibliogr.: p. 175-177 ISSN 2518-7929.
УДК:
510.6
Предметная рубрика
- Mathematical logic
Аннотация
The article is devoted to the study of semantic Jonsson quasivarieties of universal unars and undirected graphs
Ключевые слова
Jonsson theory, unar, graph, undirected graph, universal theory, Robinson theory, quasivariety, semantic Jonsson quasivariety, Jonsson spectrum, Robinson spectrum, cosemanticness, countable categoricity
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ULBRIKHT O. I.
Ulbrikht, O. I. A fragment of a theoretical set and its strongly minimal central type [Text] / O. I. Ulbrikht, N. V. Popova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 3 (111). - P. 152-164. - Bibliogr.: p. 159-161 ISSN 2518-7929.
УДК:
510.6
Предметная рубрика
- Mathematical logic
Аннотация
The paper defines a new class of algebras, the theory of which is a special case of Jonsson theories
Ключевые слова
Jonsson theory, existentially closed model, algebraically closed model, cosemanticness, Robinson spectrum, Robinson hereditary variety, central type, Jonsson fragment, theoretical set, strongly minimal type
Казахстаника
0/0 Свободно
периодические издания(Журналы)
YESSENBAYEVA G. A.
Yessenbayeva, G. A. On the function approximation by trigonometric polynomials and the properties of families of function classes over harmonic intervals [Text] / G. A. Yessenbayeva, A. N. Yesbayev , N. K. Syzdykova [et al.] // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 3 (111). - P. 181-190. - Bibliogr.: p. 187-188 ISSN 2518-7929.
УДК:
517.518.8
Предметная рубрика
- Approximation of functions by polynomials and their generalizations
Аннотация
The article is devoted to research on approximation theory
Ключевые слова
harmonic interval, spectrum, Dirichlet kernel, trigonometric polynomials, family of function classes, function approximation
Казахстаника
0/0 Свободно
периодические издания(Журналы)
TLEUKHANOVA N. T.
Tleukhanova, N. T. On the Fourier transform of functions from a Lorentz space L 2,r with a mixed metric [Text] / N. T. Tleukhanova, G. K. Mussabayeva , M. Manarbek // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 3 (111). - P. 138-151. - Bibliogr.: p. 148-149 ISSN 2518-7929.
УДК:
517.518.45
Предметная рубрика
- Fourier series
Аннотация
In the article a two-dimensional analog of the Bochkarev type theorem for the Fourier transform was received
Ключевые слова
Lorentz Space, Hausdorff-Young-Riesz theorem, Bochkarev’s theorem, Cauchy-Bunyakovsky inequality, Helder’s inequality
Казахстаника
0/0 Свободно
периодические издания(Журналы)
TEMIRKHANOVA A. M.
Temirkhanova, A. M. Criteria for the boundedness of a certain class of matrix operators from lpv into lqu [Text] / A. M. Temirkhanova, A. T. Beszhanova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 3 (111). - P. 122-137. - Bibliogr.: p. 135-136 ISSN 2518-7929.
УДК:
517.98
Предметная рубрика
- Functional analysis and operator theory
Аннотация
This paper deals with the problem of boundedness of matrix operators from lpv into lqu for 1 < q < p < 1
Ключевые слова
matrix operator, conjugate operator, weight sequence, boundedness, weight inequalities, weight Lebesgue space, Oinarov’s condition, Hardy operator, Hardy inequality, matrix
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ABDIMANAPOVA P. B.
Abdimanapova, P. B. Well-posedness criteria for one family of boundary value problems [Text] / P. B. Abdimanapova, S. M. Temesheva // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 4 (112). - P. 5-20. - Bibliogr.: p. 16-17 ISSN 2518-7929
.
УДК:
517.9
Предметная рубрика
- Differential equations. Integral equations
Аннотация
This paper considers a family of linear two-point boundary value problems for systems of ordinary differential equations
Ключевые слова
multipoint boundary value problem, existence of solution, well-posedness, necessary and sufficient condition, шеттік есеп, дифференциалдық теңдеулер, краевые задачи, дифференциальные уравнения
Казахстаника
0/0 Свободно
периодические издания(Журналы)
AKHAZHANOV T. B.
Akhazhanov, T. B. Coefficients of multiple Fourier-Haar series and variational modulus of continuity [Text] / T. B. Akhazhanov, N. А. Bokayev , D. T. Matin [et al.] // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 4 (112). - P. 21-29. - Bibliogr.: p. 26-27 ISSN 2518-7929.
УДК:
517.518.45
Предметная рубрика
- Fourier series
Аннотация
In this paper, the issue of the absolute convergence for multiple series composed of the Fourier-Haar coefficients of functions of several variables of bounded p-variation was studied
Ключевые слова
Fourier-Haar series, variational modulus of continuity, coefficients of multiple Fourier-Haar series, ряды Фурье-Хаара, Фурье-Хаар қатары
Казахстаника
0/0 Свободно
периодические издания(Журналы)
APAKOV YU. P.
Apakov, Yu. P. On a boundary problem for the fourth order equation with the third derivative with respect to time [Text] / Yu. P. Apakov, D. M. Meliquzieva // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 4(112). - P. 30-40. - Bibliogr.: p. 36-37 ISSN 2518-7929.
УДК:
517.954
Предметная рубрика
- Boundary value problems
Аннотация
In this paper, a boundary value problem in a rectangular domain for a fourth-order homogeneous partial differential equation containing the third derivative with respect to time was considered
Ключевые слова
Initial boundary problem, Fourier method, uniqueness, existence, eigenvalue, eigenfunction, functional series, Фурье әдісі, бастапқы-шеттік есеп, метод Фурье, начально-краевая задача
Казахстаника
0/0 Свободно
периодические издания(Журналы)
PARVATHY C. R.
Parvathy, C. R. A study on new classes of binary soft sets in topological rough approximation space [Text] / C. R. Parvathy, A. Sofia // Қарағанды университетінің хабаршысы. Математика сериясы. - 2023. - № 4 (112). - P. 79-94. - Bibliogr.: p. 92-93 ISSN 2518-7929.
УДК:
515.122
Предметная рубрика
- Topological spaces
Аннотация
Approximation operators are defined and the characteristics of the proposed sets are studied with examples
Ключевые слова
Soft set, rough set, simply open, approximation space, topological space, жұмсақ жиын, топологиялық кеңістік, мягкое множество, аппроксимационное пространство
Казахстаника
0/0 Свободно
MARKHABATOV N. D.
RANKS AND APPROXIMATIONS FOR FAMILIES OF CUBIC THEORIES
периодические издания(Журналы)
0/0 Свободно
YESHKEYEV A. R.
ON CATEGORICITY QUESTIONS FOR UNIVERSAL UNARS AND UNDIRECTED GRAPHS UNDER SEMANTIC JONSSON QUASIVARIETY
периодические издания(Журналы)
0/0 Свободно
ULBRIKHT O. I.
A FRAGMENT OF A THEORETICAL SET AND ITS STRONGLY MINIMAL CENTRAL TYPE
периодические издания(Журналы)
0/0 Свободно
YESSENBAYEVA G. A.
ON THE FUNCTION APPROXIMATION BY TRIGONOMETRIC POLYNOMIALS AND THE PROPERTIES OF FAMILIES OF FUNCTION CLASSES OVER HARMONIC INTERVALS
периодические издания(Журналы)
0/0 Свободно
TLEUKHANOVA N. T.
ON THE FOURIER TRANSFORM OF FUNCTIONS FROM A LORENTZ SPACE L 2,R WITH A MIXED METRIC
периодические издания(Журналы)
0/0 Свободно
TEMIRKHANOVA A. M.
CRITERIA FOR THE BOUNDEDNESS OF A CERTAIN CLASS OF MATRIX OPERATORS FROM LPV INTO LQU
периодические издания(Журналы)
0/0 Свободно
ABDIMANAPOVA P. B.
WELL-POSEDNESS CRITERIA FOR ONE FAMILY OF BOUNDARY VALUE PROBLEMS
периодические издания(Журналы)
0/0 Свободно
AKHAZHANOV T. B.
COEFFICIENTS OF MULTIPLE FOURIER-HAAR SERIES AND VARIATIONAL MODULUS OF CONTINUITY
периодические издания(Журналы)
0/0 Свободно
APAKOV YU. P.
ON A BOUNDARY PROBLEM FOR THE FOURTH ORDER EQUATION WITH THE THIRD DERIVATIVE WITH RESPECT TO TIME
периодические издания(Журналы)
0/0 Свободно
PARVATHY C. R.
A STUDY ON NEW CLASSES OF BINARY SOFT SETS IN TOPOLOGICAL ROUGH APPROXIMATION SPACE
периодические издания(Журналы)
0/0 Свободно