【摘 要】
：
In this work,we mainly investigate the problem of complexity for a topologically dynamical system (X,f).We prove that f has a full measure center if there exist
【机 构】
：
Department of Mathematics,Lingnan College
论文部分内容阅读
In this work,we mainly investigate the problem of complexity for a topologically dynamical system (X,f).We prove that f has a full measure center if there exists a countable base {Ui}∞i=0 of X satisfying that,for any i,there is y in X such that N(y,Ui) is a positive Banach upper density set.Moreover,we consider the chaotic property of (X,f).We show that such a system is chaotic in the sense of Takens-Ruelle if it is transitive but not minimal.
其他文献
Catalytic decomposition of methane using a Fe-based catalyst for hydrogen production has been studied in this work.A Fe/Al2O3 catalyst previously developed by o
Incorporation of anions of Acid Red 114 dye (1,3-naphthalenedisulfonic acid,8-[2-[3,3'-dimethyl-4'-[2-[4-[[(4-methylphenyl)sulfonyl]oxy] phenyl]diazenyl] [1,1'-
In this paper,some weighted estimates with general weights are established for the m-linear Calderón-Zygmund operator and the corresponding maximal operator.It
Metsulfuron-methyl molecularly imprinted polymer(MIP)-coated stir bar was prepared for sorptive extraction of sulfonylurea herbicides in complex samples.The MIP
Pentafluorophenylammonium triflate (PFPAT) was found to be a highly efficient catalyst for the preparation of 2,4,6-triarylpyridines from the reaction of acetop
The synthesis and spectroscopic characterization of ruthenium complexes (R-1 to R-8) of the type [Ru(A)2(B)],(where A =1,10-phenanthroline/2,2'-bipyridine and B
我国焦耳天平方案联系磁能量差和重力势能差来建立量子质量基准,直流互感的精密测量是此方案最为关键的技术之一.针对这一难题,近几年分别提出了低频交流外推法和标准方波补
p-Type nano-ZnFe2O4 semiconductors were gained by high-prssure treatment.Surface photovoltaic spectrum(SPS) and transient photovoltaic technology(TPV) were used
Pure Ni nanoparticles ranging in size from 24 to 200nm are prepared via thermal decomposition of nickel acetylacetonate in oleylamine.The as-prepared Ni particl
Zinc hydroxide nitrate,an anionic exchanger layered material,undoped as well as doped with 2-10％ nickel,was synthesized by using a pH-controlled precipitation me