发布求助
文献互助 智能选刊 最新文献

Journal of Dynamical Systems and Geometric Theories最新文献

筛选
英文 中文
The average shadowing property and chaos for continuous flows 连续流的平均阴影性质与混沌
IF 0.9
Journal of Dynamical Systems and Geometric Theories Pub Date : 2017-07-03 DOI: 10.1080/1726037X.2017.1390190
Ying-xuan Niu
{"title":"The average shadowing property and chaos for continuous flows","authors":"Ying-xuan Niu","doi":"10.1080/1726037X.2017.1390190","DOIUrl":"https://doi.org/10.1080/1726037X.2017.1390190","url":null,"abstract":"Abstract Let X be a compact metric space and ϕ : R × X → X be a continuous flow. In this paper, we prove that if ϕ has the average shadowing property and the almost periodic points of ϕ are dense in X, then ϕ × ϕ is topologically ergodic. As a corollary, we obtain that if a Lyapunov stable flow ϕ has the average-shadowing property, then X is a singleton.","PeriodicalId":42788,"journal":{"name":"Journal of Dynamical Systems and Geometric Theories","volume":"15 1","pages":"109 - 99"},"PeriodicalIF":0.9,"publicationDate":"2017-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1726037X.2017.1390190","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46104340","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
Differential geometry of transversal intersection curves of hypersurfaces in ℝ5 超曲面的横交曲线的微分几何
IF 0.9
Journal of Dynamical Systems and Geometric Theories Pub Date : 2017-07-03 DOI: 10.1080/1726037X.2017.1411042
Mohamd Saleem Lone, Osmar Aléssio, Mohammed Jamali, M. Shahid
{"title":"Differential geometry of transversal intersection curves of hypersurfaces in ℝ5","authors":"Mohamd Saleem Lone, Osmar Aléssio, Mohammed Jamali, M. Shahid","doi":"10.1080/1726037X.2017.1411042","DOIUrl":"https://doi.org/10.1080/1726037X.2017.1411042","url":null,"abstract":"Abstract In this paper, we present the algorithms for calculating the differential geometric quantities {t, n, b1, b2, b3, k2, k3, k4}, geodesic curvature and geodesic torsion of the transversal intersection curve of four hypersurfaces (given by parametric representation) in Euclidean space ℝ5. In transversal intersection, the normals of the surfaces at the intersection point are linearly independent, while as in nontransversal intersection, the normals of the surfaces at the intersection point axe linearly dependent.","PeriodicalId":42788,"journal":{"name":"Journal of Dynamical Systems and Geometric Theories","volume":"15 1","pages":"147 - 162"},"PeriodicalIF":0.9,"publicationDate":"2017-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1726037X.2017.1411042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47792089","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
Upper and lower solutions method for higher order fractional initial value problems 高阶分数阶初值问题的上下解法
IF 0.9
Journal of Dynamical Systems and Geometric Theories Pub Date : 2017-01-02 DOI: 10.1080/1726037X.2017.1327162
A. Guezane-Lakoud, R. Khaldi
{"title":"Upper and lower solutions method for higher order fractional initial value problems","authors":"A. Guezane-Lakoud, R. Khaldi","doi":"10.1080/1726037X.2017.1327162","DOIUrl":"https://doi.org/10.1080/1726037X.2017.1327162","url":null,"abstract":"ABSTRACT This paper concerns the existence of solution to an initial fractional problem of arbitrary order. The main tools for this study are the lower ad upper solutions method and Schauder’s fixed point Theorem.","PeriodicalId":42788,"journal":{"name":"Journal of Dynamical Systems and Geometric Theories","volume":"15 1","pages":"29 - 35"},"PeriodicalIF":0.9,"publicationDate":"2017-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1726037X.2017.1327162","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46716713","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
Electric and magnetic parts of the Weyl tensor and spin coefficients Weyl张量的电磁部分和自旋系数
IF 0.9
Journal of Dynamical Systems and Geometric Theories Pub Date : 2017-01-02 DOI: 10.1080/1726037X.2017.1323417
A. Hasmani, R. Panchal
{"title":"Electric and magnetic parts of the Weyl tensor and spin coefficients","authors":"A. Hasmani, R. Panchal","doi":"10.1080/1726037X.2017.1323417","DOIUrl":"https://doi.org/10.1080/1726037X.2017.1323417","url":null,"abstract":"Abstract It is known that electric and magnetic parts of the Weyl tensor in General Relativity are analogous to that occur in the theory of electromagnetism. On the other hand, Newman-Penrose formalism provides a new dimension to the solutions and interpretations for the theory of relativity. Its significance in understanding spacetimes with some particular Petrov types, solutions with different material contents is well known. This paper provides spin coefficient form of electric and magnetic parts of the Weyl tensor, which leads to a new and efficient way for the computation of electric and magnetic parts of the Weyl tensor. It is observed that the computational time is greatly reduced when done using computer algebra system in comparison to that is done manually. This technique is elaborated in the example of Pure Radiation metric.","PeriodicalId":42788,"journal":{"name":"Journal of Dynamical Systems and Geometric Theories","volume":"15 1","pages":"37 - 49"},"PeriodicalIF":0.9,"publicationDate":"2017-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1726037X.2017.1323417","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43823810","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
LRS Bianchi Type-II modified holographic Ricci dark energy models in a scalar-tensor theory of gravitation LRS Bianchi ii型修正了引力标量张量理论中的全息Ricci暗能量模型
IF 0.9
Journal of Dynamical Systems and Geometric Theories Pub Date : 2017-01-02 DOI: 10.1080/1726037X.2017.1327163
D. Reddy, T. Kanakavalli, G. A. Rao
{"title":"LRS Bianchi Type-II modified holographic Ricci dark energy models in a scalar-tensor theory of gravitation","authors":"D. Reddy, T. Kanakavalli, G. A. Rao","doi":"10.1080/1726037X.2017.1327163","DOIUrl":"https://doi.org/10.1080/1726037X.2017.1327163","url":null,"abstract":"Abstract A locally rotationally symmetric (LRS) Bianchi type-II spacetime is considered in the presence of dark matter and anisotropic modified holographic Ricci dark energy in the scalar-tensor theory of Saez and Ballester (Phys. Lett. A 113: 467, 1986). To obtain exact solutions of Saez-Ballester gravitational field equations we use the following physically significant conditions: (i) the scalar expansion of the space time is proportional to its shear scalar, (ii) hybrid expansion law for the scale factor proposed by Akarsu et al. (JCAP 01: 022, 2014) and (iii) modified Ricci dark energy density given by Chen and Jing (Phys. Lett. B 679: 144, 2009). The solution describes modified holographic Ricci dark energy models, in this theory, which exhibit a smooth transition from decelerated phase to the present accelerated phase of the universe. This result is in accordance with the present day observations of cosmology. The dynamical parameters of the models are computed and their physical importance, in cosmology, is discussed.","PeriodicalId":42788,"journal":{"name":"Journal of Dynamical Systems and Geometric Theories","volume":"15 1","pages":"85 - 97"},"PeriodicalIF":0.9,"publicationDate":"2017-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1726037X.2017.1327163","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47525712","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
On Inextensible flows of curves according to alternative moving frame 关于交替运动框架下曲线的不可拓流
IF 0.9
Journal of Dynamical Systems and Geometric Theories Pub Date : 2017-01-02 DOI: 10.1080/1726037X.2017.1323416
T. Körpınar
{"title":"On Inextensible flows of curves according to alternative moving frame","authors":"T. Körpınar","doi":"10.1080/1726037X.2017.1323416","DOIUrl":"https://doi.org/10.1080/1726037X.2017.1323416","url":null,"abstract":"Abstract In this paper, we investigate inextensible flows of curves according to alternative moving frame in Euclidean space 𝔼3. Using the Prenet frame of the given curve, we present partial differential equations. The concepts with the inextensible flows are analyzed by using alternative moving frame.","PeriodicalId":42788,"journal":{"name":"Journal of Dynamical Systems and Geometric Theories","volume":"15 1","pages":"15 - 27"},"PeriodicalIF":0.9,"publicationDate":"2017-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1726037X.2017.1323416","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49594017","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 osculating, normal and rectifying bi-null curves in ℝ63 关于f(63)上的共轭、正态和校正双零曲线
IF 0.9
Journal of Dynamical Systems and Geometric Theories Pub Date : 2017-01-02 DOI: 10.1080/1726037X.2017.1323415
A. Uçum, M. Sakaki, K. Ilarslan
{"title":"On osculating, normal and rectifying bi-null curves in ℝ63","authors":"A. Uçum, M. Sakaki, K. Ilarslan","doi":"10.1080/1726037X.2017.1323415","DOIUrl":"https://doi.org/10.1080/1726037X.2017.1323415","url":null,"abstract":"Abstract In this paper we give the necessary and sufficient conditions for bi-null curves in ℝ63 to be osculating, normal or rectifying curves in terms of their curvature functions.","PeriodicalId":42788,"journal":{"name":"Journal of Dynamical Systems and Geometric Theories","volume":"15 1","pages":"1 - 13"},"PeriodicalIF":0.9,"publicationDate":"2017-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1726037X.2017.1323415","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44300350","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
Adding machine maps and minimal sets for iterated function systems 为迭代函数系统添加机器图和最小集
IF 0.9
Journal of Dynamical Systems and Geometric Theories Pub Date : 2016-12-19 DOI: 10.1080/1726037X.2017.1324587
M. F. Nia
{"title":"Adding machine maps and minimal sets for iterated function systems","authors":"M. F. Nia","doi":"10.1080/1726037X.2017.1324587","DOIUrl":"https://doi.org/10.1080/1726037X.2017.1324587","url":null,"abstract":"ABSTRACT In this paper, we focus attention on extending the topological conjugacy of adding machine maps and minimal systems to iterated function systems. We provide necessary and sufficient conditions for an iterated function system to be conjugated to an adding machine map. It is proved that every minimal iterated function system which has some non-periodic regular point is semi-conjugate to an adding machine map. Furthermore, we investigate the topological conjugacy of an infinite family of tent maps, as well as the restriction of a map to its ω—limit set with an iterated function system.","PeriodicalId":42788,"journal":{"name":"Journal of Dynamical Systems and Geometric Theories","volume":"15 1","pages":"71 - 83"},"PeriodicalIF":0.9,"publicationDate":"2016-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1726037X.2017.1324587","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60349973","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
Hofer-Like Geometry and Flux Theory 类霍夫几何与通量理论
IF 0.9
Journal of Dynamical Systems and Geometric Theories Pub Date : 2016-09-26 DOI: 10.1080/1726037X.2021.2011110
S. Tchuiaga
{"title":"Hofer-Like Geometry and Flux Theory","authors":"S. Tchuiaga","doi":"10.1080/1726037X.2021.2011110","DOIUrl":"https://doi.org/10.1080/1726037X.2021.2011110","url":null,"abstract":"Abstract This paper meticulously revisit and study the flux geometry of any compact connected oriented manifold (M, Ω). We generalize several well- known factorization results, exhibit some orbital conditions under which flux geometry can be studied, give a proof of the discreteness of the flux group for volume-preserving diffeomorphisms, derive that any smooth isotopy in the group of all vanishing-flux volume-preserving diffeomorphisms is a vanishing- flux path, and show that the kernel of flux for volume-preserving diffeomorphisms is C 1−closed inside the group of all volume-preserving diffeomorphisms isotopic to the identity map: We recover several well-known results from symplectic geometry. We use the above studies to construct a right-invariant metric on the group of all volume-preserving diffeomorphisms isotopic to the identity map and study the induced geometry. In the case of a symplectic volume form, the restriction of our metric to the group Ham(N, ω), of all Hamiltonian diffeomorphisms of a closed symplectic manifold (N, ω), is controlled from above by the usual Hofer metric in general, while the Hofer-like metric control our metric in the case where the Riemannian structure is compatible with the symplectic structure (in particular, our construction implies the non-degeneracy of the Hofer and Hofer-like norms).","PeriodicalId":42788,"journal":{"name":"Journal of Dynamical Systems and Geometric Theories","volume":"19 1","pages":"227 - 270"},"PeriodicalIF":0.9,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60350292","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
Seir epidemic model with two time delays 具有两个时滞的Seir流行病模型
IF 0.9
Journal of Dynamical Systems and Geometric Theories Pub Date : 2016-07-02 DOI: 10.1080/1726037X.2016.1250503
T. Waezizadeh
{"title":"Seir epidemic model with two time delays","authors":"T. Waezizadeh","doi":"10.1080/1726037X.2016.1250503","DOIUrl":"https://doi.org/10.1080/1726037X.2016.1250503","url":null,"abstract":"Abstract In this paper we introduce the SEIR epidemic model with latent and infectious time delays, which are denoted by ω and τ respectively. As follows we consider two different cases, ω = 0 and ω ≠ 0 ≠ τ. Stability near disease-free and endemic equilibrium points in different cases are investigated.","PeriodicalId":42788,"journal":{"name":"Journal of Dynamical Systems and Geometric Theories","volume":"14 1","pages":"189 - 200"},"PeriodicalIF":0.9,"publicationDate":"2016-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1726037X.2016.1250503","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60349695","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信