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Statistical convergence on L−fuzzy normed space L−模糊赋范空间上的统计收敛性
IF 0.8 4区 数学
Filomat Pub Date : 2023-01-01 DOI: 10.2298/fil2307077y
Reha Yapali, Hüsamettin Çoskun, U. Gürdal
{"title":"Statistical convergence on L−fuzzy normed space","authors":"Reha Yapali, Hüsamettin Çoskun, U. Gürdal","doi":"10.2298/fil2307077y","DOIUrl":"https://doi.org/10.2298/fil2307077y","url":null,"abstract":"In this paper, we study the concept of statistical convergence on L?fuzzy normed spaces. Then we give a useful characterization for statistically convergent sequences. Furthermore, we illustrate that our method of convergence is more general than the usual convergence on L?fuzzy normed spaces.","PeriodicalId":12305,"journal":{"name":"Filomat","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68271458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Homoclinic solutions and periodic solutions of complex-valued neural networks with time-varying delays 时变时滞复值神经网络的同斜解和周期解
IF 0.8 4区 数学
Filomat Pub Date : 2023-01-01 DOI: 10.2298/fil2307997s
Ling Sun, F. Kong
{"title":"Homoclinic solutions and periodic solutions of complex-valued neural networks with time-varying delays","authors":"Ling Sun, F. Kong","doi":"10.2298/fil2307997s","DOIUrl":"https://doi.org/10.2298/fil2307997s","url":null,"abstract":"In this paper, a class of complex-valued neural networks with time-varying delays is studied. By employing an extension of Mawhin?s continuation theorem and an approximation technique, several sufficient conditions of the new results on the existence of homoclinic solutions and periodic solutions are established. Moreover, the asymptotic behavior of solutions via the Lyapunov function is also investigated. Finally, for the purpose of validity, an example is given to illustrate the effectiveness of main results.","PeriodicalId":12305,"journal":{"name":"Filomat","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68272586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gradient Ricci-Yamabe solitons on warped product manifolds 弯曲积流形上的梯度Ricci-Yamabe孤子
IF 0.8 4区 数学
Filomat Pub Date : 2023-01-01 DOI: 10.2298/fil2307199k
Fatma Karaca
{"title":"Gradient Ricci-Yamabe solitons on warped product manifolds","authors":"Fatma Karaca","doi":"10.2298/fil2307199k","DOIUrl":"https://doi.org/10.2298/fil2307199k","url":null,"abstract":"We give the necessary and sufficient conditions for a gradient Ricci-Yamabe soliton with warped product metric. As physical applications, we consider gradient Ricci-Yamabe solitons on generalized Robertson-Walker space-times and standard static space-times.","PeriodicalId":12305,"journal":{"name":"Filomat","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68272682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Almost Kenmotsu manifolds with constant Reeb or Ф-sectional curvatures 具有恒定Reeb或Ф-sectional曲率的几乎Kenmotsu流形
IF 0.8 4区 数学
Filomat Pub Date : 2023-01-01 DOI: 10.2298/fil2308495w
Yaning Wang, Pei Wang
{"title":"Almost Kenmotsu manifolds with constant Reeb or Ф-sectional curvatures","authors":"Yaning Wang, Pei Wang","doi":"10.2298/fil2308495w","DOIUrl":"https://doi.org/10.2298/fil2308495w","url":null,"abstract":"In this paper, we prove that an almost Kenmotsu manifold M has constant Reeb sectional curvatures if and only if M has conformal Reeb foliation. Onan almost Kenmotsu h-a-manifold of dimension three having constant ?-sectional curvature, the Reeb vector field is an eigenvector field of the Ricci operator if and only if the manifold is locally isometric to a non-unimodular Lie group.","PeriodicalId":12305,"journal":{"name":"Filomat","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68275522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Shapiro’s uncertainty principles and scalogram associated with the Riemann-Liouville wavelet transform 夏皮罗的不确定性原理和尺度图与黎曼-刘维尔小波变换
IF 0.8 4区 数学
Filomat Pub Date : 2023-01-01 DOI: 10.2298/fil2301043m
H. Mejjaoli, F. Shah
{"title":"Shapiro’s uncertainty principles and scalogram associated with the Riemann-Liouville wavelet transform","authors":"H. Mejjaoli, F. Shah","doi":"10.2298/fil2301043m","DOIUrl":"https://doi.org/10.2298/fil2301043m","url":null,"abstract":"The Riemann-Liouville operator has been extensively investigated and has witnessed a remarkable development in numerous fields of harmonic analysis over a couple of decades. The aim of this article is to explore two more aspects of the time-frequency analysis associated with the Riemann-Liouville wavelet transform, including the Shapiro uncertainty principle and the scalogram.","PeriodicalId":12305,"journal":{"name":"Filomat","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68266142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On harmonic convex functions of three variables and related Hermite-Hadamard inequalities 三变量调和凸函数及相关Hermite-Hadamard不等式
IF 0.8 4区 数学
Filomat Pub Date : 2023-01-01 DOI: 10.2298/fil2302335n
M. Noor, K. Noor, S. Iftikhar, M. Awan
{"title":"On harmonic convex functions of three variables and related Hermite-Hadamard inequalities","authors":"M. Noor, K. Noor, S. Iftikhar, M. Awan","doi":"10.2298/fil2302335n","DOIUrl":"https://doi.org/10.2298/fil2302335n","url":null,"abstract":"The main objective of this paper is to extend the notion of harmonic convex functions for three variables. Some associated Hermite-Hadamard type of integral inequalities are also obtained.","PeriodicalId":12305,"journal":{"name":"Filomat","volume":"18 2 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68266966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The study of error bounds for generalized vector inverse mixed quasi-variational inequalities 广义向量逆混合拟变分不等式误差界的研究
IF 0.8 4区 数学
Filomat Pub Date : 2023-01-01 DOI: 10.2298/fil2302627k
J. Kim, S. Salahuddin, A. Ahmadini
{"title":"The study of error bounds for generalized vector inverse mixed quasi-variational inequalities","authors":"J. Kim, S. Salahuddin, A. Ahmadini","doi":"10.2298/fil2302627k","DOIUrl":"https://doi.org/10.2298/fil2302627k","url":null,"abstract":"In this study, generalized multivalued vector inverse quasi-variational inequality problems are developed, and error bounds are obtained in terms of the residual gap function, the regularized gap function, and the D-gap function. With the help of these constraints, one can effectively estimate the distances between any feasible point and the solution set of problems involving generalized multivalued vector inverse quasi-variational inequality.","PeriodicalId":12305,"journal":{"name":"Filomat","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68267348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","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 domain of q-Euler matrix in c and c0 with its point spectra c和c中q-欧拉矩阵的定义域及其点谱
IF 0.8 4区 数学
Filomat Pub Date : 2023-01-01 DOI: 10.2298/fil2302643y
Taja Yaying, B. Hazarika, Liquan Mei
{"title":"On the domain of q-Euler matrix in c and c0 with its point spectra","authors":"Taja Yaying, B. Hazarika, Liquan Mei","doi":"10.2298/fil2302643y","DOIUrl":"https://doi.org/10.2298/fil2302643y","url":null,"abstract":"We introduce new Banach spaces e?,? 0 (q) and e?,? c (q) defined as the domain of generalized q-Euler matrix E?,?(q) in the spaces c0 and c, respectively. Some topological properties and inclusion relations related to the newly defined spaces are exhibited. We determine the bases and obtain K?the duals of the spaces e?,? 0 (q) and e?,? c (q). We characterize certain matrix mappings from the spaces e?,? 0 (q) and e?,? c (q) to the space S ? {??, c, c0, ?1, bs, cs, cs0}. We compute necessary and sufficient conditions for a matrix operator to be compact from the space e?,? 0 (q) to the space S ? {??, c, c0, ?1, bs, cs, cs0} using Hausdorff measure of non-compactness. Finally, we give point spectrum of the matrix E?,?(q) in the space c.","PeriodicalId":12305,"journal":{"name":"Filomat","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68267415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Lp-inequalities and Parseval-type relations for the index 2F1-transform 指标2f1变换的lp不等式和parseval型关系
IF 0.8 4区 数学
Filomat Pub Date : 2023-01-01 DOI: 10.2298/fil2304087g
B. J. González, E. Negrín
{"title":"Lp-inequalities and Parseval-type relations for the index 2F1-transform","authors":"B. J. González, E. Negrín","doi":"10.2298/fil2304087g","DOIUrl":"https://doi.org/10.2298/fil2304087g","url":null,"abstract":"In this paper we consider a systematic study of several new Lp-boundedness properties for the index 2F1-transform over the spaces L?,p (R+), 1 ? p < ?, ? ? R, and L? (R+). We also obtain Parseval-type relations over these spaces.","PeriodicalId":12305,"journal":{"name":"Filomat","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68268477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Approximation properties of semi-exponential Szász-Mirakyan-Kantorovich operators 半指数Szász-Mirakyan-Kantorovich算子的近似性质
IF 0.8 4区 数学
Filomat Pub Date : 2023-01-01 DOI: 10.2298/fil2304097a
Gunjan Agrawal, Vijay Gupta
{"title":"Approximation properties of semi-exponential Szász-Mirakyan-Kantorovich operators","authors":"Gunjan Agrawal, Vijay Gupta","doi":"10.2298/fil2304097a","DOIUrl":"https://doi.org/10.2298/fil2304097a","url":null,"abstract":"In the present paper, we deal with the approximation properties of semi-exponential Sz?sz-Mirakyan-Kantorovich operators. Here, we establish the relation between semi-exponential Sz?sz-Mirakyan operators and its Kantorovich variant. Further, we propose the modification of the Kantorovich variant so as to preserve the test functions eAx and e2Ax and we derive the Voronovskaya-type result.","PeriodicalId":12305,"journal":{"name":"Filomat","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68268621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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