发布求助
文献互助 智能选刊 最新文献

Journal of Siberian Federal University. Mathematics and Physics最新文献

筛选
英文 中文
Generalized Contractions to Coupled Fixed Point Theorems in Partially Ordered Metric Spaces 部分有序度量空间中耦合不动点定理的广义压缩
Journal of Siberian Federal University. Mathematics and Physics Pub Date : 2020-08-01 DOI: 10.17516/1997-1397-2020-13-4-492-502
Rao, N. Seshagiri, K. Kalyani
{"title":"Generalized Contractions to Coupled Fixed Point Theorems in Partially Ordered Metric Spaces","authors":"Rao, N. Seshagiri, K. Kalyani","doi":"10.17516/1997-1397-2020-13-4-492-502","DOIUrl":"https://doi.org/10.17516/1997-1397-2020-13-4-492-502","url":null,"abstract":"Abstract. The purpose of this paper is to establish some coupled fixed point theorems for a self mapping satisfying certain rational type contractions along with strict mixed monotone property in a metric space endowed with partial order. Also, we have given the result of existence and uniqueness of a coupled fixed point for the mapping. This result generalize and extend several well known results in the literature.","PeriodicalId":422202,"journal":{"name":"Journal of Siberian Federal University. Mathematics and Physics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129692550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
On Estimation of Bivariate Survival Function from Random Censored Data 随机截尾数据的双变量生存函数估计
Journal of Siberian Federal University. Mathematics and Physics Pub Date : 2020-08-01 DOI: 10.17516/1997-1397-2020-13-422-430
R. S. Muradov
{"title":"On Estimation of Bivariate Survival Function from Random Censored Data","authors":"R. S. Muradov","doi":"10.17516/1997-1397-2020-13-422-430","DOIUrl":"https://doi.org/10.17516/1997-1397-2020-13-422-430","url":null,"abstract":"At present there are several approaches to estimate survival functions of vectors of lifetimes. However, some of these estimators are either inconsistent or not fully defined in the range of joint survival functions. Therefore they are not applicable in practice. In this paper three types of estimates of exponential-hazard, product-limit and relative-risk power structures for the bivariate survival function are considered when the number of summands in empirical estimates is replaced with a sequence of Poisson random variables. It is shown that proposed estimates are asymptotically equivalent. Keywords: bivariate survival function, Poisson random variables, empirical estimates","PeriodicalId":422202,"journal":{"name":"Journal of Siberian Federal University. Mathematics and Physics","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116526010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
On Error Estimates in Sp for Cubature Formulas Exact for Haar Polynomials 关于Haar多项式精确公式在Sp中的误差估计
Journal of Siberian Federal University. Mathematics and Physics Pub Date : 2020-08-01 DOI: 10.17516/1997-1397-2020-13-4-398-413
K. Kirillov, Кирилл А. Кириллов
{"title":"On Error Estimates in Sp for Cubature Formulas Exact for Haar Polynomials","authors":"K. Kirillov, Кирилл А. Кириллов","doi":"10.17516/1997-1397-2020-13-4-398-413","DOIUrl":"https://doi.org/10.17516/1997-1397-2020-13-4-398-413","url":null,"abstract":"The problem of constructing and analyzing cubature formulas that are exact for a given set of functions was earlier considered primarily as applied to the computation of integrals exact for algebraic and trigonometric polynomials. For example, the approximate integration formulas of algebraic accuracy can be found in [1, 2]. The cubature formulas exact for trigonometric polynomials in particular were studied in [3–7]. The approximate integration formulas exact for the system of Haar functions can be found in the monograph [8]. The accuracy of approximate integration formulas for finite Haar sums was used in [8] to derive error estimates for these formulas. A description of all minimal weighted quadrature formulas possessing the Haar d-property, i.e., formulas exact for Haar functions of groups with indices not exceeding a given number d, was given in [9]. The error estimates for quadrature formulas possessing the Haar d-property in the case of the weight function g(x) ≡ 1 were obtained in [10]. In particular, in the mentioned paper the upper estimate for the norm of the error functional ∥δN∥S∗ p was found for the quadrature formulas having the Haar d-property:","PeriodicalId":422202,"journal":{"name":"Journal of Siberian Federal University. Mathematics and Physics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129344696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
To the Question of Analytical Estimate of Evaporation Time of the Drop, Crossing Through the Heat Media 关于液滴穿过热介质蒸发时间的解析估计问题
Journal of Siberian Federal University. Mathematics and Physics Pub Date : 2020-08-01 DOI: 10.17516/1997-1397-2020-13-4-439-450
S. Gladkov
{"title":"To the Question of Analytical Estimate of Evaporation Time of the Drop, Crossing Through the Heat Media","authors":"S. Gladkov","doi":"10.17516/1997-1397-2020-13-4-439-450","DOIUrl":"https://doi.org/10.17516/1997-1397-2020-13-4-439-450","url":null,"abstract":"Received 01.02.2020, received in revised form 13.03.2020, accepted 20.05.2020 Abstract. Due to the kinetic approach the modelling description of the drop evaporation is offer. The main equation of the theory received due to the conservation law of dissipative functions of the vapor – liquid system. The diapason of drop size it’s finding when its stability. It’s comparison of the results with the famous classical is given. The numerical estimate of the linear size of small disperse phase when take place usually evaporation (i.e. the Knudsen’s number is a small Kn = l R ≪ 1, where l is a free length path of the molecule and R is an drop radius) are given.","PeriodicalId":422202,"journal":{"name":"Journal of Siberian Federal University. Mathematics and Physics","volume":"286 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115330028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Colorings of the Graph K ᵐ 2 + Kn 图K * 2 + Kn的着色
Journal of Siberian Federal University. Mathematics and Physics Pub Date : 2020-06-01 DOI: 10.17516/1997-1397-2020-13-3-297-305
L. X. Hung
{"title":"Colorings of the Graph K ᵐ 2 + Kn","authors":"L. X. Hung","doi":"10.17516/1997-1397-2020-13-3-297-305","DOIUrl":"https://doi.org/10.17516/1997-1397-2020-13-3-297-305","url":null,"abstract":"In this paper, we characterize chromatically unique, determine list-chromatic number and characterize uniquely list colorability of the graph G = Km 2 + Kn. We shall prove that G is χ-unique, ch(G) = m + n, G is uniquely 3-list colorable graph if and only if 2m + n > 7 and m > 2","PeriodicalId":422202,"journal":{"name":"Journal of Siberian Federal University. Mathematics and Physics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127322467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
LP -bound for the Fourier Transform of Surface-Carried Measures Supported on Hypersurfaces with D∞ Type Singularities 具有D∞型奇异点的超曲面上承载测度的傅里叶变换的LP界
Journal of Siberian Federal University. Mathematics and Physics Pub Date : 2020-06-01 DOI: 10.17516/1997-1397-2020-13-3-350-359
N. Soleeva
{"title":"LP -bound for the Fourier Transform of Surface-Carried Measures Supported on Hypersurfaces with D∞ Type Singularities","authors":"N. Soleeva","doi":"10.17516/1997-1397-2020-13-3-350-359","DOIUrl":"https://doi.org/10.17516/1997-1397-2020-13-3-350-359","url":null,"abstract":"Received 02.02.2020, received in revised form 06.03.2020, accepted 06.04.2020 Abstract. Estimate for Fourier transform of surface-carried measures supported on non-convex surfaces of three-dimensional Euclidean space is considered in this paper.The exact convergence exponent was found wherein the Fourier transform of measures is integrable in tree-dimensional space. This result gives an answer to the question posed by Erdösh and Salmhofer.","PeriodicalId":422202,"journal":{"name":"Journal of Siberian Federal University. Mathematics and Physics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116600532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Root Locus of Algebraic Equations 代数方程的根轨迹
Journal of Siberian Federal University. Mathematics and Physics Pub Date : 2020-04-01 DOI: 10.17516/1997-1397-2020-13-2-141-150
I Bykov Valeriy, B. Svetlana
{"title":"Root Locus of Algebraic Equations","authors":"I Bykov Valeriy, B. Svetlana","doi":"10.17516/1997-1397-2020-13-2-141-150","DOIUrl":"https://doi.org/10.17516/1997-1397-2020-13-2-141-150","url":null,"abstract":"The locus of real and complex roots of algebraic equations are constructed in this paper. Calculations of specific equations show that the location of their roots depends on the type of equation","PeriodicalId":422202,"journal":{"name":"Journal of Siberian Federal University. Mathematics and Physics","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130350824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anisotropic Antiplane Elastoplastic Problem 各向异性反平面弹塑性问题
Journal of Siberian Federal University. Mathematics and Physics Pub Date : 2020-03-01 DOI: 10.17516/1997-1397-2020-13-2-213-217
S. Senashov, I. Savostyanova, O. Cherepanova, С И Сенашов, Ирина Л. Савостьянова, Ольга Н. Черепанова
{"title":"Anisotropic Antiplane Elastoplastic Problem","authors":"S. Senashov, I. Savostyanova, O. Cherepanova, С И Сенашов, Ирина Л. Савостьянова, Ольга Н. Черепанова","doi":"10.17516/1997-1397-2020-13-2-213-217","DOIUrl":"https://doi.org/10.17516/1997-1397-2020-13-2-213-217","url":null,"abstract":"Received 10.11.2019, received in revised form 11.01.2020, accepted 20.02.2020 Abstract. In this work we solve an anisotropic antiplane elastoplastic problem about stress state in a body weakened by a hole bounded by a piecewise-smooth contour. We give the conservation laws which allowed us to reduce calculations of stress components to a contour integral over the contour of the hole. The conservation laws allowed us to find the boundary between the elastic and plastic areas.","PeriodicalId":422202,"journal":{"name":"Journal of Siberian Federal University. Mathematics and Physics","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133118630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Application of the Plan Formula to the Study of the Zeta-Function of Zeros of Entire Function 平面公式在研究全函数零点的ζ函数中的应用
Journal of Siberian Federal University. Mathematics and Physics Pub Date : 2020-03-01 DOI: 10.17516/1997-1397-2020-13-2-135-140
V. I. Kuzovatov, A. Kytmanov, A. Sadullaev, Вячеслав И. Кузоватов, Александр М. Кытманов, Азимбай С Садуллаев
{"title":"On the Application of the Plan Formula to the Study of the Zeta-Function of Zeros of Entire Function","authors":"V. I. Kuzovatov, A. Kytmanov, A. Sadullaev, Вячеслав И. Кузоватов, Александр М. Кытманов, Азимбай С Садуллаев","doi":"10.17516/1997-1397-2020-13-2-135-140","DOIUrl":"https://doi.org/10.17516/1997-1397-2020-13-2-135-140","url":null,"abstract":"Received 10.09.2019, received in revised form 16.11.2019, accepted 20.01.2020 Abstract. We consider an application of the Plan formula to the study of the properties of the zetafunction of zeros of entire function. Based on this formula, we obtained an explicit expression for the kernel of the integral representation of the zeta-function in this case.","PeriodicalId":422202,"journal":{"name":"Journal of Siberian Federal University. Mathematics and Physics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116866890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Recursive Algorithm for Estimating the Correlation Matrix of the Interference Based on the QR Decomposition 基于QR分解的干扰相关矩阵递推估计算法
Journal of Siberian Federal University. Mathematics and Physics Pub Date : 2020-03-01 DOI: 10.17516/1997-1397-2020-13-2-160-169
V. N. Tyapkin, D. Dmitriev, A. Gladyshev, P. Y. Zverev, Валерий Николаевич Тяпкин, Дмитрий Дмитриевич Дмитриев, Андрей Борисович Гладышев, Пётр Ю. Зверев
{"title":"A Recursive Algorithm for Estimating the Correlation Matrix of the Interference Based on the QR Decomposition","authors":"V. N. Tyapkin, D. Dmitriev, A. Gladyshev, P. Y. Zverev, Валерий Николаевич Тяпкин, Дмитрий Дмитриевич Дмитриев, Андрей Борисович Гладышев, Пётр Ю. Зверев","doi":"10.17516/1997-1397-2020-13-2-160-169","DOIUrl":"https://doi.org/10.17516/1997-1397-2020-13-2-160-169","url":null,"abstract":"Abstract. Many tasks of digital signal processing require the implementation of matrix operations in real time. These are operations of matrix inversion or solving systems of linear algebraic or differential equations (Kalman filter). The transition to the implementation of digital signal processing on programmable logic device (FPGAs), as a rule, involves calculations based on the representation of numbers with a fixed point. This makes solving spatio-temporal processing problems practically impossible based on conventional computational methods. The article discusses the implementation of spatial-temporal signal processing algorithms in satellite broadband systems using QR decomposition. The technologies of CORDIC computations required for recurrent QR decomposition when used together in systolic algorithms are presented.","PeriodicalId":422202,"journal":{"name":"Journal of Siberian Federal University. Mathematics and Physics","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116882525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信