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Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics最新文献

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Erratum to: Zero-based invariant subspaces in the Bergman space Bergman空间中基于零的不变子空间的勘误表
IF 0.9
Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics Pub Date : 2022-09-30 DOI: 10.1501/commua1_0000000849
Fatiha Bouabdallah, Zohra
{"title":"Erratum to: Zero-based invariant subspaces in the Bergman space","authors":"Fatiha Bouabdallah, Zohra","doi":"10.1501/commua1_0000000849","DOIUrl":"https://doi.org/10.1501/commua1_0000000849","url":null,"abstract":"In this Erratum we would like to clarify statement and the proof of Theorem 2 in our paper: ”Zero-based invariant subspaces in the Bergman space Commun. Fac. Sci. Univ. Ank. Ser. A1 Math. Stat., 67(1) (2018), 277-285.”","PeriodicalId":44692,"journal":{"name":"Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43143105","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
Combinatorial results of collapse for order-preserving and order-decreasing transformations 保序和降序变换的折叠的组合结果
IF 0.9
Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics Pub Date : 2022-09-30 DOI: 10.31801/cfsuasmas.1019458
E. Korkmaz
{"title":"Combinatorial results of collapse for order-preserving and order-decreasing transformations","authors":"E. Korkmaz","doi":"10.31801/cfsuasmas.1019458","DOIUrl":"https://doi.org/10.31801/cfsuasmas.1019458","url":null,"abstract":"The full transformation semigroup TnTn is defined to consist of all functions from Xn={1,…,n}Xn={1,…,n} to itself, under the operation of composition. In cite{JMH1}, for any αα in TnTn, Howie defined and denoted collapse by c(α)=⋃t∈im(α){tα−1:|tα−1|≥2}c(α)=⋃t∈im(α){tα−1:|tα−1|≥2}. Let OnOn be the semigroup of all order-preserving transformations and CnCn be the semigroup of all order-preserving and decreasing transformations on XnXn=under its natural order, respectively. \u0000Let E(On)E(On) be the set of all idempotent elements of OnOn, E(Cn)E(Cn) and N(Cn)N(Cn) be the sets of all idempotent and nilpotent elements of CnCn, respectively. Let UU be one of {Cn,N(Cn),E(Cn),On,E(On)}{Cn,N(Cn),E(Cn),On,E(On)}. For α∈Uα∈U, we consider the set\u0000imc(α)={t∈im(α):|tα−1|≥2}imc(α)={t∈im(α):|tα−1|≥2}. For positive integers 2≤k≤r≤n2≤k≤r≤n, we define\u0000U(k)={α∈U:t∈imc(α) and |tα−1|=k},U(k,r)={α∈U(k):∣∣⋃t∈imc(α)tα−1|=r}.U(k)={α∈U:t∈imc(α) and |tα−1|=k},U(k,r)={α∈U(k):|⋃t∈imc(α)tα−1|=r}.\u0000The main objective of this paper is to determine |U(k,r)||U(k,r)|, and so |U(k)||U(k)| for some values rr and kk.","PeriodicalId":44692,"journal":{"name":"Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45529035","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
Soft semi-topological polygroups 软半拓扑多群
IF 0.9
Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics Pub Date : 2022-09-30 DOI: 10.31801/cfsuasmas.997442
R. Mousarezaei, B. Davvaz
{"title":"Soft semi-topological polygroups","authors":"R. Mousarezaei, B. Davvaz","doi":"10.31801/cfsuasmas.997442","DOIUrl":"https://doi.org/10.31801/cfsuasmas.997442","url":null,"abstract":"By removing the condition that the inverse function is continuous in soft topological polygroups, we will have less constraint to obtain the results. We offer different definitions for soft topological polygroups and eliminate the inverse function continuity condition to have more freedom of action.","PeriodicalId":44692,"journal":{"name":"Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48576142","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
Some Hardy-type integral inequalities with sharp constant involving monotone functions 涉及单调函数的尖锐常数hardy型积分不等式
IF 0.9
Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics Pub Date : 2022-09-30 DOI: 10.31801/cfsuasmas.1058586
Bendaoud ABED SİD AHMED, B. Benaissa, A. Senouci
{"title":"Some Hardy-type integral inequalities with sharp constant involving monotone functions","authors":"Bendaoud ABED SİD AHMED, B. Benaissa, A. Senouci","doi":"10.31801/cfsuasmas.1058586","DOIUrl":"https://doi.org/10.31801/cfsuasmas.1058586","url":null,"abstract":"In this work, we present some Hardy-type integral inequalities for 0 < p < 1 via a second parameter q > 0 with sharp constant. This inequalities are new generalizations to the inequalities given below.","PeriodicalId":44692,"journal":{"name":"Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69413435","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 different approach to boundedness of the B-maximal operators on the variable Lebesgue spaces 变量Lebesgue空间上b极大算子有界性的另一种方法
IF 0.9
Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics Pub Date : 2022-09-30 DOI: 10.31801/cfsuasmas.1030942
Esra Kaya
{"title":"A different approach to boundedness of the B-maximal operators on the variable Lebesgue spaces","authors":"Esra Kaya","doi":"10.31801/cfsuasmas.1030942","DOIUrl":"https://doi.org/10.31801/cfsuasmas.1030942","url":null,"abstract":"By using the Lp(⋅)−Lp(⋅)−boundedness of a maximal operator defined on homogeneous space, it has been shown that the B−B−maximal operator is bounded. In the present paper, we aim to bring a different approach to the boundedness of the B−B−maximal operator generated by generalized translation operator under a continuity assumption on p(⋅)p(⋅). It is noteworthy to mention that our assumption is weaker than uniform Hölder continuity.","PeriodicalId":44692,"journal":{"name":"Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42190080","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
α-Sasakian, β-Kenmotsu and trans-Sasakian structures on the tangent bundle 切线束上的α-Sasakian、β-Kenmotsu和trans sasakian结构
IF 0.9
Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics Pub Date : 2022-09-30 DOI: 10.31801/cfsuasmas.1010695
Haşim Çayır, Tarana Sultanova
{"title":"α-Sasakian, β-Kenmotsu and trans-Sasakian structures on the tangent bundle","authors":"Haşim Çayır, Tarana Sultanova","doi":"10.31801/cfsuasmas.1010695","DOIUrl":"https://doi.org/10.31801/cfsuasmas.1010695","url":null,"abstract":"This paper consists of two main sections. In the first part, we give some general information about the almost contact manifold, α−Sasakian, β−Kenmotsu and trans-Sasakian Structures on the manifolds. In the second part, these structures were expressed on the tangent bundle with the help of lifts and the most general forms were tried to be obtained.","PeriodicalId":44692,"journal":{"name":"Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44840886","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
Multivalent harmonic functions Involving multiplier transformation 涉及乘法器变换的多价调和函数
IF 0.9
Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics Pub Date : 2022-09-30 DOI: 10.31801/cfsuasmas.962040
V. Gupta, S. Porwal, Omendra Mishra
{"title":"Multivalent harmonic functions Involving multiplier transformation","authors":"V. Gupta, S. Porwal, Omendra Mishra","doi":"10.31801/cfsuasmas.962040","DOIUrl":"https://doi.org/10.31801/cfsuasmas.962040","url":null,"abstract":"In the present investigation we study a subclass of multivalent harmonic functions involving multiplier transformation. An equivalent convolution class condition and a sufficient coefficient condition for this class is acquired. We also show that this coefficient condition is necessary for functions belonging to its subclass. As an application of coefficient condition, a necessary and sufficient hypergeometric inequality is also given. Further, results on bounds, inclusion relation, extreme points, a convolution property and a result based on the integral operator are obtained.","PeriodicalId":44692,"journal":{"name":"Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47496786","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
The Minkowski type inequalities for weighted fractional operators 加权分式算子的Minkowski型不等式
IF 0.9
Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics Pub Date : 2022-09-30 DOI: 10.31801/cfsuasmas.1054069
Çetin Yıldız, M. Gürbüz
{"title":"The Minkowski type inequalities for weighted fractional operators","authors":"Çetin Yıldız, M. Gürbüz","doi":"10.31801/cfsuasmas.1054069","DOIUrl":"https://doi.org/10.31801/cfsuasmas.1054069","url":null,"abstract":"In this article, inequalities of reverse Minkowski type involving weighted fractional operators are investigated. In addition, new fractional integral inequalities related to Minkowski type are also established.","PeriodicalId":44692,"journal":{"name":"Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45362440","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
Tail dependence estimation based on smooth estimation of diagonal section 基于对角截面光滑估计的尾部相关性估计
IF 0.9
Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics Pub Date : 2022-09-30 DOI: 10.31801/cfsuasmas.988076
Selim Orhun Susam
{"title":"Tail dependence estimation based on smooth estimation of diagonal section","authors":"Selim Orhun Susam","doi":"10.31801/cfsuasmas.988076","DOIUrl":"https://doi.org/10.31801/cfsuasmas.988076","url":null,"abstract":"This paper is mainly developed around the diagonal section which is strongly related to tail dependence coefficients as defined in Nelsen [19]. Hence, we propose a flexible method for estimating tail dependence coefficients based on the new smooth estimation of the diagonal section based on the Bernstein polynomial approximation. To assess the performance of the new estimators we conduct the Monte-Carlo simulation study. As a result of the simulation study, both estimators perform satisfactory performance. Also, the estimation methods are illustrated by real data examples.","PeriodicalId":44692,"journal":{"name":"Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48774749","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
Coefficients of Randic and Sombor characteristic polynomials of some graph types 若干图型的随机和Sombor特征多项式系数
IF 0.9
Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics Pub Date : 2022-09-30 DOI: 10.31801/cfsuasmas.1080426
M. Oz
{"title":"Coefficients of Randic and Sombor characteristic polynomials of some graph types","authors":"M. Oz","doi":"10.31801/cfsuasmas.1080426","DOIUrl":"https://doi.org/10.31801/cfsuasmas.1080426","url":null,"abstract":"Let GG be a graph. The energy of GG is defined as the summation of absolute values of the eigenvalues of the adjacency matrix of GG. It is possible to study several types of graph energy originating from defining various adjacency matrices defined by correspondingly different types of graph invariants. The first step is computing the characteristic polynomial of the defined adjacency matrix of GG for obtaining the corresponding energy of GG. In this paper, formulae for the coefficients of the characteristic polynomials of both the Randic and the Sombor adjacency matrices of path graph PnPn , cycle graph CnCn are presented. Moreover, we obtain the five coefficients of the characteristic polynomials of both Randic and Sombor adjacency matrices of a special type of 3−regular graph RnRn.","PeriodicalId":44692,"journal":{"name":"Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45721079","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
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