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Limit cycles of discontinuous piecewise differential systems formed by linear and cubic isochronous centers 由线性和三次等时中心组成的不连续分段微分系统的极限环
Journal of Mathematical and Computational Science Pub Date : 2022-01-01 DOI: 10.28919/jmcs/7629
{"title":"Limit cycles of discontinuous piecewise differential systems formed by linear and cubic isochronous centers","authors":"","doi":"10.28919/jmcs/7629","DOIUrl":"https://doi.org/10.28919/jmcs/7629","url":null,"abstract":"","PeriodicalId":36607,"journal":{"name":"Journal of Mathematical and Computational Science","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75500042","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
CC-regular topological spaces 正则拓扑空间
Journal of Mathematical and Computational Science Pub Date : 2022-01-01 DOI: 10.28919/jmcs/7748
{"title":"CC-regular topological spaces","authors":"","doi":"10.28919/jmcs/7748","DOIUrl":"https://doi.org/10.28919/jmcs/7748","url":null,"abstract":"","PeriodicalId":36607,"journal":{"name":"Journal of Mathematical and Computational Science","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75590231","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
Existence and extremal solutions in Banach algebras for a fractional order differential equation 分数阶微分方程的Banach代数的存在性和极值解
Journal of Mathematical and Computational Science Pub Date : 2022-01-01 DOI: 10.28919/jmcs/7304
{"title":"Existence and extremal solutions in Banach algebras for a fractional order differential equation","authors":"","doi":"10.28919/jmcs/7304","DOIUrl":"https://doi.org/10.28919/jmcs/7304","url":null,"abstract":"","PeriodicalId":36607,"journal":{"name":"Journal of Mathematical and Computational Science","volume":"87 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75906102","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
Generalized Shehu transform 广义Shehu变换
Journal of Mathematical and Computational Science Pub Date : 2022-01-01 DOI: 10.28919/jmcs/6922
{"title":"Generalized Shehu transform","authors":"","doi":"10.28919/jmcs/6922","DOIUrl":"https://doi.org/10.28919/jmcs/6922","url":null,"abstract":"","PeriodicalId":36607,"journal":{"name":"Journal of Mathematical and Computational Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76271979","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
Qualitative analysis of A.P.A. solution for fractional order neutral stochastic evolution equations driven by G-Brownian motion g - brown运动驱动的分数阶中立型随机演化方程A.P.A.解的定性分析
Journal of Mathematical and Computational Science Pub Date : 2022-01-01 DOI: 10.28919/jmcs/7061
A. D. Nagargoje, V. C. Borkar, R. A. Muneshawar
{"title":"Qualitative analysis of A.P.A. solution for fractional order neutral stochastic evolution equations driven by G-Brownian motion","authors":"A. D. Nagargoje, V. C. Borkar, R. A. Muneshawar","doi":"10.28919/jmcs/7061","DOIUrl":"https://doi.org/10.28919/jmcs/7061","url":null,"abstract":"where A(γ) : D(A(γ)) ⊂ LG(F )→ LG(F ) is densely closed linear operator and the functions D,φ ,φ and ψ : LG(F )→ LG(F ) are jointly continuous. We drive square mean almost pseudo automorphic mild solution for fractional order neutral stochastic evolution equations driven by G-Brownian motion is obtain by using evolution operator theorem and fixed point theorem. Moreover, we prove that this mild solution of equation (1) is unique.","PeriodicalId":36607,"journal":{"name":"Journal of Mathematical and Computational Science","volume":"385 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80746952","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
Symmetry considerations for differential equation formulations from classical and fractional Lagrangians 经典和分数拉格朗日微分方程公式的对称性考虑
Journal of Mathematical and Computational Science Pub Date : 2022-01-01 DOI: 10.28919/jmcs/6994
Uchechukwu Opara, F. Arunaye
{"title":"Symmetry considerations for differential equation formulations from classical and fractional Lagrangians","authors":"Uchechukwu Opara, F. Arunaye","doi":"10.28919/jmcs/6994","DOIUrl":"https://doi.org/10.28919/jmcs/6994","url":null,"abstract":"unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract. The utility of Noether’s classical theorem on differential equations extended to a generalized nonclassical theorem is the focus of this paper. After addressing a couple of standard related Partial Differential Equation (P.D.E.) formulations from classical Lagrangians, it culminates into a non-classical formulation of the diffusion equation in one spatial dimension from a fractional Lagrangian. Comparisons and contrasts between techniques for the classical and fractional formulations, as done here, facilitate the basic computational methods required for building analytical results. A noteworthy interface between Distribution theory, Trace theory and Lie symmetry theory is a key point of interest in this study.","PeriodicalId":36607,"journal":{"name":"Journal of Mathematical and Computational Science","volume":"15 10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86661733","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
Stable linear multistep methods with off-step points for the solution of ordinary differential equations 常微分方程解的带离步点的稳定线性多步方法
Journal of Mathematical and Computational Science Pub Date : 2022-01-01 DOI: 10.28919/jmcs/6656
I. Esuabana, S. E. Ekoro, U. Abasiekwere, E. Ekpenyong, T. O. Ogumbe
{"title":"Stable linear multistep methods with off-step points for the solution of ordinary differential equations","authors":"I. Esuabana, S. E. Ekoro, U. Abasiekwere, E. Ekpenyong, T. O. Ogumbe","doi":"10.28919/jmcs/6656","DOIUrl":"https://doi.org/10.28919/jmcs/6656","url":null,"abstract":"STABLE LINEAR MULTISTEP METHODS WITH OFF-STEP POINTS FOR THE SOLUTION OF ORDINARY DIFFERENTIAL EQUATIONS I. M. ESUABANA, S. E. EKORO, U. A. ABASIEKWERE, E. O. EKPENYONG, T. O. OGUMBE Department of Mathematics, University of Calabar, P.M.B. 1115, Calabar, Cross River State, Nigeria Department of Mathematics, University of Uyo, P.M.B. 1017, Uyo, Akwa Ibom State, Nigeria Copyright © 2022 the author(s). This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract: Of recent, stability has become an important concept and a qualitative property in any numerical integration scheme. In this work, we propose two stable linear multistep methods with off-step points for the numerical integration","PeriodicalId":36607,"journal":{"name":"Journal of Mathematical and Computational Science","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84718273","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 lifesaving tool for covid patients using BPF soft topology: decision making in oxygen concentrator 使用BPF软拓扑的covid患者救生工具:氧气浓缩器中的决策
Journal of Mathematical and Computational Science Pub Date : 2022-01-01 DOI: 10.28919/jmcs/7131
K. Vishalakshi
{"title":"A lifesaving tool for covid patients using BPF soft topology: decision making in oxygen concentrator","authors":"K. Vishalakshi","doi":"10.28919/jmcs/7131","DOIUrl":"https://doi.org/10.28919/jmcs/7131","url":null,"abstract":"In this paper, we introduced the notion of bipolar Pythagorean fuzzy soft topology and proved some of its basic properties. We defined bipolar Pythagorean fuzzy regular generalized soft sets. We presented some basic operations on bipolar Pythagorean fuzzy soft topology. We gave an application of bipolar Pythagorean fuzzy soft open sets which are bipolar Pythagorean fuzzy regular generalized closed sets taken from bipolar Pythagorean fuzzy topology into a decision-making problem.","PeriodicalId":36607,"journal":{"name":"Journal of Mathematical and Computational Science","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87240730","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
Mixture of Al2O3-Cu/H2O-(CH2OH)2 MHD hybrid nanofluid flow due to a stretchable rotating disks system under the influence of non-uniform heat source or sink and thermal radiation Al2O3-Cu/H2O-(CH2OH)2 MHD混合纳米流体在非均匀热源或汇和热辐射影响下的可拉伸旋转盘体系流动
Journal of Mathematical and Computational Science Pub Date : 2022-01-01 DOI: 10.28919/jmcs/6624
Ogunsola Amos Wale, Akindele Akintayo Oladimeji
{"title":"Mixture of Al2O3-Cu/H2O-(CH2OH)2 MHD hybrid nanofluid flow due to a stretchable rotating disks system under the influence of non-uniform heat source or sink and thermal radiation","authors":"Ogunsola Amos Wale, Akindele Akintayo Oladimeji","doi":"10.28919/jmcs/6624","DOIUrl":"https://doi.org/10.28919/jmcs/6624","url":null,"abstract":"This paper investigates the theoretical analysis of hybrid nanofluid flow due to stretchable rotating disks system under the influence of non-uniform heat source or sink and thermal radiation. Two types of nanoparticles Copper (Cu) and Alumina (Al2O3) mixed with the base fluid (ethylene glycol and water) in a ratio 50:50 were considered. The governing partial differential equations were considered in a cylindrical coordinate and Von Karman transformations were rendered into the system to obtain equivalent Ordinary differential equations. The resulting non-linear Ordinary differential equations together with their initial and boundary conditions were solved using finite differences method (FDM) with the aid of maple 18.0 software. The numerical result obtained shows the effect of Reynolds number, Radiation parameter, magnetic parameter and volume fraction of hybrid nanoparticles on the total Entropy generation and Bejan number. Also, the Skin friction Coefficient and Nusselt number at the lower and upper rotating disk were examined for different parameters and the effects of various parameters on the Axial, radial and tangential velocities and the thermal field presented graphically.","PeriodicalId":36607,"journal":{"name":"Journal of Mathematical and Computational Science","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86918916","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
Bernoulli's vacation of M^x/G/1 queue with two-tier service based volatile server 基于两层服务的易变服务器M^x/G/1队列的Bernoulli假期
Journal of Mathematical and Computational Science Pub Date : 2022-01-01 DOI: 10.28919/jmcs/6978
{"title":"Bernoulli's vacation of M^x/G/1 queue with two-tier service based volatile server","authors":"","doi":"10.28919/jmcs/6978","DOIUrl":"https://doi.org/10.28919/jmcs/6978","url":null,"abstract":"","PeriodicalId":36607,"journal":{"name":"Journal of Mathematical and Computational Science","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85438393","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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