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Kragujevac Journal of Mathematics最新文献

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On Fuzzy Primary and Fuzzy Quasi-Primary Ideals in LASemigroups 关于半群中的模糊初等和模糊拟初等理想
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2022-08-01 DOI: 10.46793/kgjmat2204.617y
P. Yiarayong
{"title":"On Fuzzy Primary and Fuzzy Quasi-Primary Ideals in LASemigroups","authors":"P. Yiarayong","doi":"10.46793/kgjmat2204.617y","DOIUrl":"https://doi.org/10.46793/kgjmat2204.617y","url":null,"abstract":"The purpose of this paper is to introduce the notion of a weakly fuzzy quasi-primary ideals in LA-semigroups, we study fuzzy primary, fuzzy quasi-primary, fuzzy completely primary, weakly fuzzy primary and weakly fuzzy quasi-primary ideals in LA-semigroups. Some characterizations of weakly fuzzy primary and weakly fuzzy quasi-primary ideals are obtained. Moreover, we investigate relationships between fuzzy completely primary and weakly fuzzy quasi-primary ideals in LAsemigroups. Finally we show that a fuzzy left ideal f is a weakly fuzzy quasi-primary ideal of S2 if and only if S1 × f is a weakly fuzzy quasi-primary ideal of S1 × S2.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47204238","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
BOUNDEDNESS OF L-INDEX IN JOINT VARIABLES FOR SUM OF ENTIRE FUNCTIONS 整个函数和联合变量中l指标的有界性
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2022-08-01 DOI: 10.46793/kgjmat2204.595b
Andriy Ivanovych Bandura
{"title":"BOUNDEDNESS OF L-INDEX IN JOINT VARIABLES FOR SUM OF ENTIRE FUNCTIONS","authors":"Andriy Ivanovych Bandura","doi":"10.46793/kgjmat2204.595b","DOIUrl":"https://doi.org/10.46793/kgjmat2204.595b","url":null,"abstract":"In the paper, we present sufficient conditions of boundedness of L-index in joint variables for a sum of entire functions, where L : C n → R n + is a continuous function, R+ = (0, +∞). They are applicable to a very wide class of entire functions because for every entire function F in C n with bounded multiplicities of zero points there exists a positive continuous function L such that F has bounded L-index in joint variables. Our propositions are generalizations of Pugh’s result obtained for entire functions of one variable of bounded index.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48879359","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
Two-Dimensional Wavelet with Matrix Dilation M = 2I and its Application in Solving Integral Equations 矩阵展开式M = 2I的二维小波及其在求解积分方程中的应用
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2022-08-01 DOI: 10.46793/kgjmat2204.649t
M. Tahami, A. A. Hemmat
{"title":"Two-Dimensional Wavelet with Matrix Dilation M = 2I and its Application in Solving Integral Equations","authors":"M. Tahami, A. A. Hemmat","doi":"10.46793/kgjmat2204.649t","DOIUrl":"https://doi.org/10.46793/kgjmat2204.649t","url":null,"abstract":"In this study, using a one-dimensionl MRA we constructed a two-dimensional wavelet as well as four masks which are not related to the MRA. Finally, we provide some examples to prove the applicability of our construction in case of finding numerical solution of two-dimensional first kind Fredholm integral equations.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42528868","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 Enumeration of the Set of Elementary Numerical Semigroups with Fixed Multiplicity, Frobenius Number or Genus 关于具有固定乘法、Frobenius数或亏格的初等数值半群集的计数
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2022-06-01 DOI: 10.46793/kgjmat2203.433r
J. Rosales, M. Branco
{"title":"On the Enumeration of the Set of Elementary Numerical Semigroups with Fixed Multiplicity, Frobenius Number or Genus","authors":"J. Rosales, M. Branco","doi":"10.46793/kgjmat2203.433r","DOIUrl":"https://doi.org/10.46793/kgjmat2203.433r","url":null,"abstract":"In this paper we give algorithms that allow to compute the set of every elementary numerical semigroups with given genus, Frobenius number and multiplicity. As a consequence we obtain formulas for the cardinality of these sets.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48261016","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: 6
On The Reverse Minkowski’s Integral Inequality 关于逆闵可夫斯基积分不等式
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2022-06-01 DOI: 10.46793/kgjmat2203.407b
B. Benaissa
{"title":"On The Reverse Minkowski’s Integral Inequality","authors":"B. Benaissa","doi":"10.46793/kgjmat2203.407b","DOIUrl":"https://doi.org/10.46793/kgjmat2203.407b","url":null,"abstract":"The aim of this work is to obtain the reverse Minkowski integral inequality. For this aim, we first give a proposition which is important for our main results. Then we establish some reverse Minkowski integral inequalities for parameters 0 < p < 1 and p < 0, respectively.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46288959","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: 4
Chaos and Shadowing in General Systems 一般系统中的混沌与阴影
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2022-06-01 DOI: 10.46793/kgjmat2203.383n
M. F. Nia, A. Z. Bahabadi
{"title":"Chaos and Shadowing in General Systems","authors":"M. F. Nia, A. Z. Bahabadi","doi":"10.46793/kgjmat2203.383n","DOIUrl":"https://doi.org/10.46793/kgjmat2203.383n","url":null,"abstract":"In this paper we describe some basic notions of topological dynamical systems for maps of type f : X × X → X named general systems. This is proved that every uniformly expansive general system has the shadowing property and every uniformly contractive general system has the (asymptotic) average shadowing and shadowing properties. In the rest, Devaney chaos for general systems is considered. Also, we show that topological transitivity and density of periodic points of a general systems imply topological ergodicity. We also obtain some results on the topological mixing and sensitivity for general systems.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41766183","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
Hypergroups Defined on Hypergraphs and their Regular Relations 在超图上定义的超群及其正则关系
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2022-06-01 DOI: 10.46793/kgjmat2203.487t
M. Al-Tahan, B. Davvaz
{"title":"Hypergroups Defined on Hypergraphs and their Regular Relations","authors":"M. Al-Tahan, B. Davvaz","doi":"10.46793/kgjmat2203.487t","DOIUrl":"https://doi.org/10.46793/kgjmat2203.487t","url":null,"abstract":"The notion of hypergraphs, introduced around 1960, is a generalization of that of graphs and one of the initial concerns was to extend some classical results of graph theory. In this paper, we present some connections between hypergraph theory and hypergroup theory. In this regard, we construct two hypergroupoids by defining two new hyperoperations on ℍ, the set of all hypergraphs. We prove that our defined hypergroupoids are commutative hypergroups and we define hyperrings on ℍ by using the two defined hyperoperations. Moreover, we study the fundamental group, complete parts, automorphism group and strongly regular relations of one of our hypergroups.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":"77 6","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41315538","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: 2
An Operational Approach to the Generalized Rencontres Polynomials 广义Rencontres多项式的一种运算方法
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2022-06-01 DOI: 10.46793/kgjmat2203.461m
E. Munarini
{"title":"An Operational Approach to the Generalized Rencontres Polynomials","authors":"E. Munarini","doi":"10.46793/kgjmat2203.461m","DOIUrl":"https://doi.org/10.46793/kgjmat2203.461m","url":null,"abstract":"In this paper, we study the umbral operators J, M and N associated with the generalized rencontres polynomials D(m) n (x). We obtain their representations in terms of the differential operator Dx and the shift operator E. Then, by using these representations, we obtain some combinatorial and differential identities for the generalized rencontres polynomials. Finally, we extend these results to some related polynomials and, in particular, to the generalized permutation polynomials P(m)n (x) and the generalized arrangement polynomials A(m)n (x).","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42138706","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: 2
Existence and Stability of Nonlocal Initial Value Problems Involving Generalized Katugampola Derivative 涉及广义Katugampola导数的非局部初值问题的存在性与稳定性
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2022-06-01 DOI: 10.46793/kgjmat2203.443b
A. Bagwan, D. Pachpatte
{"title":"Existence and Stability of Nonlocal Initial Value Problems Involving Generalized Katugampola Derivative","authors":"A. Bagwan, D. Pachpatte","doi":"10.46793/kgjmat2203.443b","DOIUrl":"https://doi.org/10.46793/kgjmat2203.443b","url":null,"abstract":"In this paper, the existence results for the solutions to nonlocal initial value problems involving generalized Katugampola derivative are established. Some fixed point theorem techniques are used to derive the existence results. In the sequel, we investigate the generalized Ulam-Hyers-Rassias stability corresponding to our problem. Some examples are given to illustrate our main results.","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47796918","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
SPECTRA OF THE LOWER TRIANGULAR MATRIX B(r1, . . . , rl ; s1, . . . , sl ′) OVER c0 c0上下三角矩阵B（r1，…，rl；s1，…，sl′）的谱
IF 0.7
Kragujevac Journal of Mathematics Pub Date : 2022-06-01 DOI: 10.46793/kgjmat2203.369m
Sanjay Kumar Mahto, A. Patra, P. Srivastava
{"title":"SPECTRA OF THE LOWER TRIANGULAR MATRIX B(r1, . . . , rl ; s1, . . . , sl ′) OVER c0","authors":"Sanjay Kumar Mahto, A. Patra, P. Srivastava","doi":"10.46793/kgjmat2203.369m","DOIUrl":"https://doi.org/10.46793/kgjmat2203.369m","url":null,"abstract":"The inĄnite lower triangular matrix B(r1, . . . , rl ; s1, . . . , sl ′ ) is considered over the sequence space c0, where l and l ′ are positive integers. The diagonal and sub-diagonal entries of the matrix consist of the oscillatory sequences r = (rk(mod l)+1) and s = (sk(mod l ′)+1), respectively. The rest of the entries of the matrix are zero. It is shown that the matrix represents a bounded linear operator. Then the spectrum of the matrix is evaluated and partitioned into its Ąne structures: point spectrum, continuous spectrum, residual spectrum, etc. In particular, the spectra of the matrix B(r1, . . . , r4; s1, . . . , s6) are determined. Finally, an example is taken in support of the results","PeriodicalId":44902,"journal":{"name":"Kragujevac Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45948675","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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