In ref. [1] Smale pointed out that the existence of minimal sets is an important problem. The main problem is to determine what kind of spaces are minimal with respect to some flows on it. A comprehensive report of th...In ref. [1] Smale pointed out that the existence of minimal sets is an important problem. The main problem is to determine what kind of spaces are minimal with respect to some flows on it. A comprehensive report of this problem was given in ref. [2]. The distal flows were studied in refs. [3, 4]. Recently, Komuro proved that the展开更多
In this paper,we investigate the topological stability and pseudo-orbit tracing property for homeomorphisms on uniform spaces.We introduce the concept of topological stability for homeomorphisms on compact uniform spa...In this paper,we investigate the topological stability and pseudo-orbit tracing property for homeomorphisms on uniform spaces.We introduce the concept of topological stability for homeomorphisms on compact uniform spaces and prove that if a homeomorphism on a compact uniform space is expansive and has pseudo-orbit tracing property,then it is topologically stable.Moreover,we discuss the topological stability for homeomorphisms on uniform spaces from the view of localization.We introduce definitions of topologically stable point and shadowable point for homeomorphisms on uniform spaces and show that every shadowable point of an expansive homeomorphism on a compact uniform space is topologically stable.展开更多
IN this letter we discuss the necessary and sufficient condition of C^0 flows on closed surfaces with isolated singular points having the pseudo-orbit tracing property. According to ref. [1], on a closed surface, ever...IN this letter we discuss the necessary and sufficient condition of C^0 flows on closed surfaces with isolated singular points having the pseudo-orbit tracing property. According to ref. [1], on a closed surface, every minimal set of a C^r(r≥2) flow is trivial, but it is possible for a C^0 flow to contain non-trivial minimal sets. Thus C^0 flows on closed surfaces are more complicated than C^r(r≥2) flows.展开更多
Let M be a closed surface,orientable or non-orientable,and let f be a C0 flow on M of which all singular points are isolated.Then f has the pseudo-orbit tracing property if and only if (i) for any x∈M,both the ω-lim...Let M be a closed surface,orientable or non-orientable,and let f be a C0 flow on M of which all singular points are isolated.Then f has the pseudo-orbit tracing property if and only if (i) for any x∈M,both the ω-limit set ω(x) and the α-limit set α(x) of x contain only one orbit; (ii) for any regular point x of f,if ω(x) is not quasi-attracting,then α(x) is quasi-exclusive; (iii) every saddle point of f is strict,and at most 4-forked.展开更多
Sakai defined the Anosov maps on compact metric spaces. Sun proved that Anosovmaps have the orbit-topological stability, Markov partitions and ζ-funtions. Aformulation for the topological entropy of an Anosov map wes...Sakai defined the Anosov maps on compact metric spaces. Sun proved that Anosovmaps have the orbit-topological stability, Markov partitions and ζ-funtions. Aformulation for the topological entropy of an Anosov map wes given by Sun in reference. In this note we will also study the topological entropy of an Anosov map, but we willpay attention to the relation between the entropy and the number of periodic points. Thefollowing consequenee will be proved.展开更多
基金Project supported by the National Natural Science Foundation of China
文摘In ref. [1] Smale pointed out that the existence of minimal sets is an important problem. The main problem is to determine what kind of spaces are minimal with respect to some flows on it. A comprehensive report of this problem was given in ref. [2]. The distal flows were studied in refs. [3, 4]. Recently, Komuro proved that the
基金Supported by NNSF of China(Grant Nos.11861010,11761012)NSF for Distinguished Young Scholar of Guangxi Province(Grant No.2018GXNSFFA281008)+2 种基金supported by the Cultivation Plan of Thousands of Young Backbone Teachers in Higher Education Institutions of Guangxi ProvinceProgram for Innovative Team of Guangxi University of Finance and EconomicsProject of Guangxi Key Laboratory Cultivation Base of Cross-border E-commerce Intelligent Information Processing(Grant No.201801ZZ03)。
文摘In this paper,we investigate the topological stability and pseudo-orbit tracing property for homeomorphisms on uniform spaces.We introduce the concept of topological stability for homeomorphisms on compact uniform spaces and prove that if a homeomorphism on a compact uniform space is expansive and has pseudo-orbit tracing property,then it is topologically stable.Moreover,we discuss the topological stability for homeomorphisms on uniform spaces from the view of localization.We introduce definitions of topologically stable point and shadowable point for homeomorphisms on uniform spaces and show that every shadowable point of an expansive homeomorphism on a compact uniform space is topologically stable.
文摘IN this letter we discuss the necessary and sufficient condition of C^0 flows on closed surfaces with isolated singular points having the pseudo-orbit tracing property. According to ref. [1], on a closed surface, every minimal set of a C^r(r≥2) flow is trivial, but it is possible for a C^0 flow to contain non-trivial minimal sets. Thus C^0 flows on closed surfaces are more complicated than C^r(r≥2) flows.
基金Project supported by the National Natural Science Foundation of China.
文摘Let M be a closed surface,orientable or non-orientable,and let f be a C0 flow on M of which all singular points are isolated.Then f has the pseudo-orbit tracing property if and only if (i) for any x∈M,both the ω-limit set ω(x) and the α-limit set α(x) of x contain only one orbit; (ii) for any regular point x of f,if ω(x) is not quasi-attracting,then α(x) is quasi-exclusive; (iii) every saddle point of f is strict,and at most 4-forked.
基金Project supported in part by the Foundation of Zhongshan University.
文摘Sakai defined the Anosov maps on compact metric spaces. Sun proved that Anosovmaps have the orbit-topological stability, Markov partitions and ζ-funtions. Aformulation for the topological entropy of an Anosov map wes given by Sun in reference. In this note we will also study the topological entropy of an Anosov map, but we willpay attention to the relation between the entropy and the number of periodic points. Thefollowing consequenee will be proved.
