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Journal of the Indonesian Mathematical Society最新文献

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Warped product CR-submanifolds of Sasakian manifolds with respect to certain connections sasaki流形关于某些连接的翘曲积cr -子流形
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2019-10-31 DOI: 10.22342/JIMS.25.3.765.194-202
S. Hui, Joydeb Roy
{"title":"Warped product CR-submanifolds of Sasakian manifolds with respect to certain connections","authors":"S. Hui, Joydeb Roy","doi":"10.22342/JIMS.25.3.765.194-202","DOIUrl":"https://doi.org/10.22342/JIMS.25.3.765.194-202","url":null,"abstract":"The present paper deals with the study of warped product CR-submanifolds of Sasakian manifolds with respect to semisymmetric metric and semisymmetric non-metric connection. Among others, Ricci solitons of such notions have been investigated.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42920389","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
Model of Deposit and Loan of A Bank Using Spiral Optimization Algorithm 基于螺旋优化算法的银行存贷款模型
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2019-10-31 DOI: 10.22342/JIMS.25.3.826.292-301
Moch. Fandi Ansori, K. A. Sidarto, N. Sumarti
{"title":"Model of Deposit and Loan of A Bank Using Spiral Optimization Algorithm","authors":"Moch. Fandi Ansori, K. A. Sidarto, N. Sumarti","doi":"10.22342/JIMS.25.3.826.292-301","DOIUrl":"https://doi.org/10.22342/JIMS.25.3.826.292-301","url":null,"abstract":"Nowadays, the study of financial stability of banking is important, which is to observe the behavior of the bank in the future. In this paper, a simple model of deposit and loan of a bank is solved analytically and numerically, and then it is implemented into data of four groups of commercial banks in Indonesia based on their capitals. From the data for each group of banks, the parameters will be estimated using the Spiral Optimization Algorithm. The results show that the algorithm gives satisfactory solutions in terms of closeness between the analytical and numerical solutions. In the long run, the deposit and loan volumes will be stable at their equilibrium points which showing the good condition of the future of the banks based on current state.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48403299","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
A Firefly Algorithm for Portfolio Optimization 投资组合优化的萤火虫算法
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2019-10-31 DOI: 10.22342/JIMS.25.3.821.282-291
Indana Lazulfa
{"title":"A Firefly Algorithm for Portfolio Optimization","authors":"Indana Lazulfa","doi":"10.22342/JIMS.25.3.821.282-291","DOIUrl":"https://doi.org/10.22342/JIMS.25.3.821.282-291","url":null,"abstract":"Portfolio optimization is the process of allocating capital among a universe of assets to achieve better risk – return trade-off. Portfolio optimization is a solution for investors to get the return as large as possible and make the risk as small as possible. Due to the dynamic nature of financial markets, the portfolio needs to be rebalanced to retain the desired risk-return characteristics. This study proposed multi objective portfolio optimization model with risk, return as the objective function. For multi objective portfolio optimization problems will be used mean-variance model as risk measures. All these portfolio optimization problems will be solved by Firefly Algorithm (FA).","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47247124","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
Morrey Spaces are Embedded Between Weak Morrey Spaces and Stummel Classes Morrey空间嵌入在弱Morrey空间和Stummel类之间
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2019-10-31 DOI: 10.22342/JIMS.25.3.817.203-209
N. Tumalun, H. Gunawan
{"title":"Morrey Spaces are Embedded Between Weak Morrey Spaces and Stummel Classes","authors":"N. Tumalun, H. Gunawan","doi":"10.22342/JIMS.25.3.817.203-209","DOIUrl":"https://doi.org/10.22342/JIMS.25.3.817.203-209","url":null,"abstract":"In this paper, we show that the Morrey spaces $ L^{1,left( frac{lambda}{p} -frac{n}{p} + n right) } left( mathbb{R}^{n} right) $ are embedded betweenweak Morrey spaces $ wL^{p,lambda}left( mathbb{R}^{n} right) $ and Stummelclasses $ S_{alpha}left( mathbb{R}^{n} right) $ under some conditions on$ p, lambda $ and $ alpha $. More precisely, we prove that $ wL^{p,lambda}left(mathbb{R}^{n} right) subseteq L^{1,left( frac{lambda}{p} - frac{n}{p} + nright) } left( mathbb{R}^{n} right) subseteq S_{alpha}left( mathbb{R}^{n}right) $ where $ 1pinfty, 0lambdan $ and $ frac{n-lambda}{p}alphan $.We also show that these inclusion relations under the above conditions are proper.Lastly, we present an inequality of Adams' type cite{A}","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45052074","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: 11
Sliding Window Rough measurable function on $I-$ core of triple sequences of Bernstein operator Bernstein算子三重序列$I-$核上的滑动窗粗可测函数
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2019-10-31 DOI: 10.22342/JIMS.25.3.687.183-193
Deepmala Rai, N. Subramanian
{"title":"Sliding Window Rough measurable function on $I-$ core of triple sequences of Bernstein operator","authors":"Deepmala Rai, N. Subramanian","doi":"10.22342/JIMS.25.3.687.183-193","DOIUrl":"https://doi.org/10.22342/JIMS.25.3.687.183-193","url":null,"abstract":"We introduce sliding window rough $I-$ core and study some basic properties of Bernstein polynomials of rough $I-$ convergent of triple sequence spaces and also study the set of all Bernstein polynomials of sliding window of rough $I-$ limits of a triple sequence spaces and relation between analytic ness and Bernstein polynomials of sliding window of rough $I-$ core of a triple sequence spaces.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41873499","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
Numerical Solution for A Class of Fractional Variational Problem via Second Order B-Spline Function 一类分数变分问题的二阶b样条函数数值解
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2019-10-31 DOI: 10.22342/JIMS.25.3.672.171-182
N. F. Ismail, Chang Phang
{"title":"Numerical Solution for A Class of Fractional Variational Problem via Second Order B-Spline Function","authors":"N. F. Ismail, Chang Phang","doi":"10.22342/JIMS.25.3.672.171-182","DOIUrl":"https://doi.org/10.22342/JIMS.25.3.672.171-182","url":null,"abstract":"In this paper, we solve a class of fractional variational problems (FVPs) by using operational matrix of fractional integration which derived from second order spline (B-spline) basis function. The fractional derivative is defined in the Caputo and Riemann-Liouville fractional integral operator. The B-spline function with unknown coefficients and B-spline operational matrix of integration are used to replace the fractional derivative which is in the performance index. Next, we applied the method of constrained extremum which involved a set of Lagrange multipliers. As a result, we get a system of algebraic equations which can be solve easily. Hence, the value for unknown coefficients of B-spline function is obtained as well as the solution for the FVPs. Finally, the illustrative examples shown the validity and applicability of this method to solve FVPs.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42253214","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
Trees with Four and Five Distinct Signless Laplacian Eigenvalues 具有四个和五个不同的无符号拉普拉斯特征值的树
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2019-10-31 DOI: 10.22342/JIMS.25.3.557.302-313
G. Fath-Tabar, F. Taghvaee
{"title":"Trees with Four and Five Distinct Signless Laplacian Eigenvalues","authors":"G. Fath-Tabar, F. Taghvaee","doi":"10.22342/JIMS.25.3.557.302-313","DOIUrl":"https://doi.org/10.22342/JIMS.25.3.557.302-313","url":null,"abstract":"‎‎Let $G$ be a simple graph with vertex set $V(G)={v_1‎, ‎v_2‎, ‎cdots‎, ‎v_n}$ ‎and‎‎edge set $E(G)$‎.‎The signless Laplacian matrix of $G$ is the matrix $‎Q‎‎=‎D‎+‎A‎‎$‎, ‎such that $D$ is a diagonal ‎matrix‎%‎‎, ‎indexed by the vertex set of $G$ where‎‎%‎$D_{ii}$ is the degree of the vertex $v_i$ ‎‎‎ and $A$ is the adjacency matrix of $G$‎.‎%‎ where $A_{ij} = 1$ when there‎‎%‎‎is an edge from $i$ to $j$ in $G$ and $A_{ij} = 0$ otherwise‎.‎The eigenvalues of $Q$ is called the signless Laplacian eigenvalues of $G$ and denoted by $q_1$‎, ‎$q_2$‎, ‎$cdots$‎, ‎$q_n$ in a graph with $n$ vertices‎.‎In this paper we characterize all trees with four and five distinct signless Laplacian ‎eigenvalues.‎‎‎","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43638532","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
Fractional Ostrowski Type Inequalities for Functions Whose Mixed Derivatives are Prequasiinvex and alpha-Prequasiinvex Functions 混合导数为预拟逆和-拟逆函数的函数的分数Ostrowski型不等式
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2019-07-10 DOI: 10.22342/JIMS.25.2.751.92-107
B. Meftah, M. Merad, A. Souahi
{"title":"Fractional Ostrowski Type Inequalities for Functions Whose Mixed Derivatives are Prequasiinvex and alpha-Prequasiinvex Functions","authors":"B. Meftah, M. Merad, A. Souahi","doi":"10.22342/JIMS.25.2.751.92-107","DOIUrl":"https://doi.org/10.22342/JIMS.25.2.751.92-107","url":null,"abstract":"In this paper, the authors introduce two new classes of generalized convexfunctions of two independent variables, and establish a new integralidentity, from which they derive some new fractional Ostrowski's integralinequalities for functions whose second derivatives are in these new classesof functions.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45990716","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
SG_C-Projective, Injective and Flat modules SG_C-投射、内射和平面模块
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2019-07-10 DOI: 10.22342/JIMS.25.2.754.108-120
Udhayakumar Ramalingam, M. Parimala
{"title":"SG_C-Projective, Injective and Flat modules","authors":"Udhayakumar Ramalingam, M. Parimala","doi":"10.22342/JIMS.25.2.754.108-120","DOIUrl":"https://doi.org/10.22342/JIMS.25.2.754.108-120","url":null,"abstract":"In this paper we introduce the concepts of $SG_C$-projective, injective and flat modules, where $C$ is a semidualizing module and we discuss some connections among $SG_C$-projective, injective and flat modules.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47367654","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
Differential Invariants of Two Affine Curve Families 两个仿射曲线族的微分不变量
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2019-07-10 DOI: 10.22342/JIMS.25.2.489.85-91
Yasemin Sagiroglu, D. Aydemir, Uğur Gözütok
{"title":"Differential Invariants of Two Affine Curve Families","authors":"Yasemin Sagiroglu, D. Aydemir, Uğur Gözütok","doi":"10.22342/JIMS.25.2.489.85-91","DOIUrl":"https://doi.org/10.22342/JIMS.25.2.489.85-91","url":null,"abstract":"This paper examines the affine differential invariants of two curves. The equivalence of two curves is obtained by using these invariants according to the affine group. In addition, obtained differential invariants will be shown to be the minimal system of the generators.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2019-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43004370","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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