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Journal of the Indonesian Mathematical Society最新文献

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Normal Developable Surfaces of A Surface Along A Direction Curve 沿方向曲线的曲面的法线可展曲面
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2020-11-05 DOI: 10.22342/JIMS.26.3.872.319-333
Rashad Abdel-Baky Abdel-Sattar, Y. Ünlütürk
{"title":"Normal Developable Surfaces of A Surface Along A Direction Curve","authors":"Rashad Abdel-Baky Abdel-Sattar, Y. Ünlütürk","doi":"10.22342/JIMS.26.3.872.319-333","DOIUrl":"https://doi.org/10.22342/JIMS.26.3.872.319-333","url":null,"abstract":"We construct a developable surface normal to a surface along a curve on the surface. As differs from the work Hananoi, we choose the curve as the normal direction curve on which the new surface is formed in Euclidean space. We obtain some results about the uniqueness and the singularities of such developable surfaces. We also give two invariants of curves on a surface which characterize singularities.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":"26 1","pages":"319-333"},"PeriodicalIF":0.3,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45663509","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
Numerical Solutions for Convective Boundary Layer Flow of Micropolar Jeffrey Fluid with Prescribe Wall Temperature 给定壁温的微极杰弗里流体对流边界层流动的数值解
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2020-11-05 DOI: 10.22342/JIMS.26.3.553.286-298
N. A. Rawi, N. Zin, A. Khalid, A. Kasim, Z. M. Isa, S. Shafie
{"title":"Numerical Solutions for Convective Boundary Layer Flow of Micropolar Jeffrey Fluid with Prescribe Wall Temperature","authors":"N. A. Rawi, N. Zin, A. Khalid, A. Kasim, Z. M. Isa, S. Shafie","doi":"10.22342/JIMS.26.3.553.286-298","DOIUrl":"https://doi.org/10.22342/JIMS.26.3.553.286-298","url":null,"abstract":"The steady two dimensional convective boundary layer flow of micropolar Jeffrey fluid past a permeable stretching sheet is studied in this paper. The governing boundary layer equation in the form of partial differential equations are transformed into nonlinear coupled ordinary differential equations and solved numerically using an implicit finite-difference scheme known as Keller-box method. The effects of Prandtl number, Deborah number, and material parameter with the boundary condition for microrotation, n = 0 (strong concentration of microelements) on the velocity, microrotation, temperature profiles as well as the skin friction and heat transfer coefficients are presented and discussed. An excellent agreement is observed between the present and earlier published results for some special cases. The results revealed that, the effect of Deborah number and stretching parameter are increased the heat transfer coefficient while the opposite trend is observed for the effects of material and velocity slip parameters. It was also observed that, the values of skin friction increased with the increment on the values of all studied parameters.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":"26 1","pages":"286-298"},"PeriodicalIF":0.3,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49168445","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
Projective Curvature Tensor with Respect to Zamkovoy Connection in Lorentzian Para-Sasakian Manifolds Lorentzian para - sasaki流形中关于Zamkovoy连接的射影曲率张量
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2020-11-05 DOI: 10.22342/JIMS.26.3.928.369-379
A. Mandal, A. Das
{"title":"Projective Curvature Tensor with Respect to Zamkovoy Connection in Lorentzian Para-Sasakian Manifolds","authors":"A. Mandal, A. Das","doi":"10.22342/JIMS.26.3.928.369-379","DOIUrl":"https://doi.org/10.22342/JIMS.26.3.928.369-379","url":null,"abstract":"The purpose of the present paper is to study some properties of the Projective curvature tensor with respect to Zamkovoy connection in Lorentzian Para Sasakian manifold(or,LP-Sasakian manifold)'And we have studied some results in Lorentzian Para-Sasakian manifold with the help of Zamkovoy connection and Projective curvature tensor.Also we discussed the LP-Sasakian manifold satisfying P*(ξ,U)∘W₀*=0,P*(ξ,U)∘W₂*=0 , where W₀*,W₂* and P* are W₀,W₂ and Projective curvature tensors with respect to Zamkovoy connection.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":"26 1","pages":"369-379"},"PeriodicalIF":0.3,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43377839","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
Quasi (s,r)-Contractive Multi-Valued Operators on b-Metric Space and Related Fixed Point Theorems b-度量空间上的拟(s,r)-压缩多值算子及其不动点定理
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2020-11-05 DOI: 10.22342/JIMS.26.3.941.393-402
E. Nyein, A. Zaw
{"title":"Quasi (s,r)-Contractive Multi-Valued Operators on b-Metric Space and Related Fixed Point Theorems","authors":"E. Nyein, A. Zaw","doi":"10.22342/JIMS.26.3.941.393-402","DOIUrl":"https://doi.org/10.22342/JIMS.26.3.941.393-402","url":null,"abstract":"This paper aims to introduce a new type of quasi (s,r)-contractive multi-valued operator on b-complete metric space and to extend the results for the fixed point theorems of quasi (s,r)-contractive multi-valued operator. As an application, the  existence of the solution for a type of differential equation is given.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":"26 1","pages":"393-402"},"PeriodicalIF":0.3,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42155808","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
First Eigenvalue of p-Laplacian Along The Normalized Ricci Flow on Bianchi Classes Bianchi类上的归一化Ricci流上p-拉普拉斯算子的第一特征值
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2020-11-05 DOI: 10.22342/JIMS.26.3.934.380-392
M. H. M. Kolaei, S. Azami
{"title":"First Eigenvalue of p-Laplacian Along The Normalized Ricci Flow on Bianchi Classes","authors":"M. H. M. Kolaei, S. Azami","doi":"10.22342/JIMS.26.3.934.380-392","DOIUrl":"https://doi.org/10.22342/JIMS.26.3.934.380-392","url":null,"abstract":"Consider M as a 3-homogeneous manifold. In this paper, we are going to study the behavior of the first eigenvalue of p-Laplace operator in a case of Bianchi classes along the normalized Ricci flow also we will give some upper and lower bounds for a such eigenvalue.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46473401","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 Rough Cayley Graph Related to Conjugacy Classes 关于与共轭类相关的Rough Cayley图
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2020-11-05 DOI: 10.22342/JIMS.26.3.681.275-285
A. Talebi, S. Amiri
{"title":"On A Rough Cayley Graph Related to Conjugacy Classes","authors":"A. Talebi, S. Amiri","doi":"10.22342/JIMS.26.3.681.275-285","DOIUrl":"https://doi.org/10.22342/JIMS.26.3.681.275-285","url":null,"abstract":"In this paper, we discuss concepts of lower and upper approximations edge Cayley graphs of Cayley graphs with respect to conjugacy classes. Also, we expand rough approximation to pseudo-Cayley graphs and introduce concept of lower and upper approximations vertex pseudo-Cayley graphs of them with respect to a conjugacy classes. In the following, we discuss the properties of automorphisms in the Cayley rough graphs.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48321590","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
Anti fuzzy bi-ideals on ordered AG-groupoids 有序ag群类群上的反模糊双理想
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2020-11-05 DOI: 10.22342/JIMS.26.3.862.299-318
N. Kausar, M. Munir, Muhammad Gulzar, Gezahagne Mulat Addis, R. Anjum
{"title":"Anti fuzzy bi-ideals on ordered AG-groupoids","authors":"N. Kausar, M. Munir, Muhammad Gulzar, Gezahagne Mulat Addis, R. Anjum","doi":"10.22342/JIMS.26.3.862.299-318","DOIUrl":"https://doi.org/10.22342/JIMS.26.3.862.299-318","url":null,"abstract":"The purpose of this study is to initiate the notion of anti fuzzy left (resp. right, bi-, generalized bi-, (1,2)-) ideals in non-associative and non-commutative ordered semigroups. We characterize different classes of non-associative and non-commutative ordered semigroups in terms of such ideals.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46393516","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
Some Weighted Inequalities for Higher-Order Partial Derivatives in Two Dimensions and Its Applications 二维高阶偏导数的一些加权不等式及其应用
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2020-11-05 DOI: 10.22342/JIMS.26.3.919.345-368
S. Erden, M. Sarıkaya
{"title":"Some Weighted Inequalities for Higher-Order Partial Derivatives in Two Dimensions and Its Applications","authors":"S. Erden, M. Sarıkaya","doi":"10.22342/JIMS.26.3.919.345-368","DOIUrl":"https://doi.org/10.22342/JIMS.26.3.919.345-368","url":null,"abstract":"We establish some Ostrowski type inequalities involving higher-order partial derivatives for two-dimensional integrals on Lebesgue spaces (L_{∞}, L_{p} and L₁). Some applications in Numerical Analysis in connection with cubature formula are given. Finally,  with the help of obtained inequality, we establish applications for the kth moment of random variables.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":"26 1","pages":"345-368"},"PeriodicalIF":0.3,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44119416","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
Dynamic Pricing Policy Using Preservation Technology with Stock and Price Sensitive Demand 基于库存和价格敏感需求的动态定价策略
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2020-11-05 DOI: 10.22342/JIMS.26.3.781.266-274
U. Khedlekar, Priyanka Singh, N. Gupta
{"title":"Dynamic Pricing Policy Using Preservation Technology with Stock and Price Sensitive Demand","authors":"U. Khedlekar, Priyanka Singh, N. Gupta","doi":"10.22342/JIMS.26.3.781.266-274","DOIUrl":"https://doi.org/10.22342/JIMS.26.3.781.266-274","url":null,"abstract":"This paper aims to develop a dynamic pricing policy for deteriorating items with price and stock dependent demand. In declining market demand of items decreases with respect to time and also after a duration items get outdated. In this situation it needs a pricing policy to sale the items before end season. The proposed dynamic pricing policy is applicable for a limited period to clease the stock. Policy decision regarding the selling price could aggressively attracts the costumers. Objectives are to maximize the prot/revenue, pricing strategy and economic order level for such a stock dependent and price sensitive items. We are giving numerical example and simulation to illustrate the proposed model.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":"26 1","pages":"266-274"},"PeriodicalIF":0.3,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46131037","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 Uniqueness of Meromorphic Functions Sharing Three-Point Sets IM 关于共享三个点集IM的亚纯函数的唯一性
IF 0.3
Journal of the Indonesian Mathematical Society Pub Date : 2020-11-05 DOI: 10.22342/JIMS.26.3.866.334-344
T. Kongo, M. Shirosaki
{"title":"On The Uniqueness of Meromorphic Functions Sharing Three-Point Sets IM","authors":"T. Kongo, M. Shirosaki","doi":"10.22342/JIMS.26.3.866.334-344","DOIUrl":"https://doi.org/10.22342/JIMS.26.3.866.334-344","url":null,"abstract":"We show that if two meromorphic functions on the complex plane shring some three-point sets IM, then they are identical under some conditions.","PeriodicalId":42206,"journal":{"name":"Journal of the Indonesian Mathematical Society","volume":"26 1","pages":"334-344"},"PeriodicalIF":0.3,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48680177","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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