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Armenian Journal of Mathematics最新文献

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Cayley-type theorems for g-dimonoids g-二单体的Cayley型定理
IF 0.4
Armenian Journal of Mathematics Pub Date : 2020-06-10 DOI: 10.52737/18291163-2020.12.3-1-14
M. Yolchyan, Yu. M. Movsisyan
{"title":"Cayley-type theorems for g-dimonoids","authors":"M. Yolchyan, Yu. M. Movsisyan","doi":"10.52737/18291163-2020.12.3-1-14","DOIUrl":"https://doi.org/10.52737/18291163-2020.12.3-1-14","url":null,"abstract":"In this paper we prove Cayley-type theorems for g-dimonoids using the left (right) acts of sets and concept of dialgebra.","PeriodicalId":42323,"journal":{"name":"Armenian Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47287121","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
Blaschke products of given quantity index for a half-plane 半平面上给定数量指标的Blaschke积
IF 0.4
Armenian Journal of Mathematics Pub Date : 2020-04-23 DOI: 10.52737/18291163-2020.12.2-1-8
G. Mikayelyan, F. Hayrapetyan
{"title":"Blaschke products of given quantity index for a half-plane","authors":"G. Mikayelyan, F. Hayrapetyan","doi":"10.52737/18291163-2020.12.2-1-8","DOIUrl":"https://doi.org/10.52737/18291163-2020.12.2-1-8","url":null,"abstract":"We investigate the growth of the integral logarithmic means of Blaschke products for the half-plane. We prove the existence of Blaschke products of given quantity indices.","PeriodicalId":42323,"journal":{"name":"Armenian Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42127509","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
Classifying cubic symmetric graphs of order $18 p^2$ 分类阶为$18 p^2$的三次对称图
IF 0.4
Armenian Journal of Mathematics Pub Date : 2020-03-28 DOI: 10.52737/18291163-2020.12.1-1-11
M. Alaeiyan, M. K. Hosseinipoor, M. Akbarizadeh
{"title":"Classifying cubic symmetric graphs of order $18 p^2$","authors":"M. Alaeiyan, M. K. Hosseinipoor, M. Akbarizadeh","doi":"10.52737/18291163-2020.12.1-1-11","DOIUrl":"https://doi.org/10.52737/18291163-2020.12.1-1-11","url":null,"abstract":"A $s$-arc in a graph is an ordered $(s+1)$-tuple $(v_{0}, v_{1}, cdots, v_{s-1}, v_{s})$ of vertices such that $v_{i-1}$ is adjacent to $v_{i}$ for $1leq i leq s$ and $v_{i-1}neq v_{i+1}$ for $1leq i < s$. A graph $X$ is called $s$-regular if its automorphism group acts regularly on the set of its $s$-arcs. In this paper, we classify all connected cubic $s$-regular graphs of order $18p^2$ for each $sgeq1$ and each prime $p$.","PeriodicalId":42323,"journal":{"name":"Armenian Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47121591","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 distribution of primitive roots that are (k,r)-integers 关于（k，r）-整数基根的分布
IF 0.4
Armenian Journal of Mathematics Pub Date : 2019-12-13 DOI: 10.52737/18291163-2019.11.12-1-12
T. Srichan, Pinthira Tangsupphathawat
{"title":"On the distribution of primitive roots that are (k,r)-integers","authors":"T. Srichan, Pinthira Tangsupphathawat","doi":"10.52737/18291163-2019.11.12-1-12","DOIUrl":"https://doi.org/10.52737/18291163-2019.11.12-1-12","url":null,"abstract":"Let $k$ and $r$ be fixed integers with $1<r<k$. A positive integer is called $r$-free if it is not divisible by the $r^{th}$ power of any prime. A positive integer $n$ is called a $(k,r)$-integer if $n$ is written in the form $a^kb$ where $b$ is an $r$-free integer. Let $p$ be an odd prime and let $x>1$ be a real number.\u0000\u0000In this paper an asymptotic formula for the number of $(k,r)$-integers which are primitive roots modulo $p$ and do not exceed $x$ is obtained.","PeriodicalId":42323,"journal":{"name":"Armenian Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47909270","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
Almost $alpha$-Hardy-Rogers-$F$-contractions and their applications 几乎$alpha$- hardy - rogers -$F$-缩约及其应用
IF 0.4
Armenian Journal of Mathematics Pub Date : 2019-11-15 DOI: 10.52737/18291163-2019.11.11-1-19
A. Tomar, Ritu Sharma
{"title":"Almost $alpha$-Hardy-Rogers-$F$-contractions and their applications","authors":"A. Tomar, Ritu Sharma","doi":"10.52737/18291163-2019.11.11-1-19","DOIUrl":"https://doi.org/10.52737/18291163-2019.11.11-1-19","url":null,"abstract":"The aim of this article is to introduce the notion of almost $alpha$-Hardy-Rogers-$F$-contractions in the partial metric space and utilize it to establish the existence of a unique fixed point. Some examples are given to demonstrate the validity of our main result. Our results generalize classical and newer results in the literature. As an application, we solve the initial value problem of damped harmonic oscillator and a nonlinear fractional differential equation satisfying periodic boundary conditions, which demonstrates the importance of our contraction and provides motivation for such investigations.","PeriodicalId":42323,"journal":{"name":"Armenian Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43287869","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
Stability, Boundedness, and Square Integrability of Solutions of Neutral Fourth-Order Differential Equations 中立型四阶微分方程解的稳定性、有界性和平方可积性
IF 0.4
Armenian Journal of Mathematics Pub Date : 2019-09-17 DOI: 10.52737/18291163-2019.11.10-1-17
M. Rahmane, M. Remili, Linda D. Oudjedi
{"title":"Stability, Boundedness, and Square Integrability of Solutions of Neutral Fourth-Order Differential Equations","authors":"M. Rahmane, M. Remili, Linda D. Oudjedi","doi":"10.52737/18291163-2019.11.10-1-17","DOIUrl":"https://doi.org/10.52737/18291163-2019.11.10-1-17","url":null,"abstract":"The purpose of this paper is to establish a new result, which guarantees the asymptotic stability and boundedness of the zero solution and the square integrability of solutions and their derivatives to neutral type nonlinear differential equations of fourth-order. We illustrate our results by an example at the end of the paper.","PeriodicalId":42323,"journal":{"name":"Armenian Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49379156","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
Quasigroups, Units and Belousov's Problem # 18 拟群、单位与Belousov问题#18
IF 0.4
Armenian Journal of Mathematics Pub Date : 2019-06-11 DOI: 10.52737/18291163-2019.11.9-1-27
A. Krapez, V. Shcherbacov
{"title":"Quasigroups, Units and Belousov's Problem # 18","authors":"A. Krapez, V. Shcherbacov","doi":"10.52737/18291163-2019.11.9-1-27","DOIUrl":"https://doi.org/10.52737/18291163-2019.11.9-1-27","url":null,"abstract":"We investigate {left, right, middle} units of quasigroups and families of identities which might imply their existence. A prominent role is played by the newly introduced notion of derivative operation, generalizing Belousov's notions of left/right derivative operations for quasigroups. Partial solutions of the Belousov's Problem # 18 and its generalizations are obtained. Several related problems remain open.","PeriodicalId":42323,"journal":{"name":"Armenian Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43232196","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: 3
On the democratic constant of Haar subsystems in $L_1 [0,1]^d$ $L_1 [0,1]^d$中的Haar子系统的民主常数
IF 0.4
Armenian Journal of Mathematics Pub Date : 2019-06-07 DOI: 10.52737/18291163-2019.11.8-1-6
N. Srapionyan
{"title":"On the democratic constant of Haar subsystems in $L_1 [0,1]^d$","authors":"N. Srapionyan","doi":"10.52737/18291163-2019.11.8-1-6","DOIUrl":"https://doi.org/10.52737/18291163-2019.11.8-1-6","url":null,"abstract":"In this paper, we estimate the democratic constant for the democratic subsystems of the $d$-dimensional Haar system in $L_1[0,1]^d$.","PeriodicalId":42323,"journal":{"name":"Armenian Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42197946","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 a Riemann boundary value problem for weighted spaces in the half-plane 关于半平面上加权空间的Riemann边值问题
IF 0.4
Armenian Journal of Mathematics Pub Date : 2019-05-24 DOI: 10.52737/18291163-2019.11.7-1-14
H. M. Hayrapetyan, S. Aghekyan
{"title":"On a Riemann boundary value problem for weighted spaces in the half-plane","authors":"H. M. Hayrapetyan, S. Aghekyan","doi":"10.52737/18291163-2019.11.7-1-14","DOIUrl":"https://doi.org/10.52737/18291163-2019.11.7-1-14","url":null,"abstract":"The paper considers the Riemann boundary value problem in the half-plane in the class of functions that are $C(rho)$-continuous with respect to the weight $rho(x)$, when the weight function has infinite number of zeros. Necessary and sufficient conditions for solvability of the problem are established. If the problem is solvable, solutions are represented in an explicit form.","PeriodicalId":42323,"journal":{"name":"Armenian Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48179784","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: 3
Finite subgroups of the free groups of the infinitely based varieties of S.I. Adian S.I.Adian的无限基变种的自由群的有限子群
IF 0.4
Armenian Journal of Mathematics Pub Date : 2019-05-08 DOI: 10.52737/18291163-2019.11.6-1-6
H. T. Aslanyan, A. Gevorgyan, H. Grigoryan
{"title":"Finite subgroups of the free groups of the infinitely based varieties of S.I. Adian","authors":"H. T. Aslanyan, A. Gevorgyan, H. Grigoryan","doi":"10.52737/18291163-2019.11.6-1-6","DOIUrl":"https://doi.org/10.52737/18291163-2019.11.6-1-6","url":null,"abstract":"It is proved that all finite subgroups of the free groups of the infinitely based varieties of S.I. Adian are cyclic. The set of all non-isomorphic free groups of rank $m$ in this varieties is of continuum cardinality for every finite rank $m > 1$.","PeriodicalId":42323,"journal":{"name":"Armenian Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48160129","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
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