Results 21 to 30 of about 246,608 (266)
On ω-Limit Sets of Zadeh’s Extension of Nonautonomous Discrete Systems on an Interval
Mathematics, 2019 Let I = [ 0 , 1 ] and f n be a sequence of continuous self-maps on I which converge uniformly to a self-map f on I. Denote by F ( I ) the set of fuzzy numbers on I, and denote by ( F ( I ) , f ^ ) and ( F ( I ) ,
Guangwang Su, Taixiang Sun
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A HASSE PRINCIPLE FOR PERIODIC POINTS [PDF]
International Journal of Number Theory, 2013 Let F be a global field, let φ ∈ F(x) be a rational map of degree at least 2, and let α ∈ F. We say that α is periodic if φn(α) = α for some n ≥ 1. A Hasse principle is the idea, or hope, that a phenomenon which happens everywhere locally should happen globally as well. The principle is well known to be true in some situations and false in others.
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Periodic points on the $2$-sphere
Discrete and Continuous Dynamical Systems, 2014 For a $C^{1}$ degree two latitude preserving endomorphism $f$ of the 2-sphere, we show that $f$ has $2^{n}$ periodic points.
Pugh, Charles, Shub, Michael
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Periodic points of a Landen transformation [PDF]
Communications in Nonlinear Science and Numerical Simulation, 2018 We prove the existence of 3-periodic orbits in a dynamical system associated to a Landen transformation previously studied by Boros, Chamberland and Moll, disproving a conjecture on the dynamics of this planar map introduced by the latter author. To this end we present a systematic methodology to determine and locate analytically isolated periodic ...
Armengol Gasull +2 more
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Periodic solutions to a class of distributed delay differential equations via variational methods
Advances in Nonlinear Analysis, 2023 In this article, we study the existence of periodic solutions to a class of distributed delay differential equations. We transform the search for periodic solutions with the special symmetry of a delay differential equation to the problem of finding ...
Xiao Huafeng, Guo Zhiming
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Open Mathematics, 2022 This study elucidates the sufficient conditions for the first-order nonlinear differential equations with periodic coefficients and time-varying delays to have positive periodic solutions.
Han Xiaoling, Lei Ceyu
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Fixed points of periodic maps [PDF]
Proceedings of the National Academy of Sciences, 1980 Let f be a periodic differentiable map from a sphere to itself. A well-known conjecture of Smith asserts that in many cases (e.g., when the fixed points are isolated) the derivatives of f at its fixed points, regarded as Jacobian matrices, are linearly ...
Cappell, Sylvain E., Shaneson, Julius L.
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2 n-periodic Sequences with Second Descent Point of k-error Linear Complexity [PDF]
Jisuanji gongcheng, 2016 The k-error linear complexity is used as an important stability index of pseudorandom sequences,and the critical error linear complexity distribution characterize the descent point of k-error linear complexity.This paper studies the 2 n-periodic binary ...
DAI Xiaoping,BI Songsong,WANG Xifeng,ZHOU Jianqin
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Some periodic and fixed point theorems on quasi-b-gauge spaces
Journal of Inequalities and Applications, 2022 The notions of a quasi-b-gauge space ( U , Q s ; Ω ) $(U,\textsl{Q}_{s ; \Omega })$ and a left (right) J s ; Ω $\mathcal{J}_{s ; \Omega }$ -family of generalized quasi-pseudo-b-distances generated by ( U , Q s ; Ω ) $(U,\textsl{Q}_{s ; \Omega })$ are ...
N. Zikria +4 more
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on periodic point and chaotic functions
مجلة بغداد للعلوم, 2005 We dealt with the nature of the points under the influence of periodic function chaotic functions associated functions chaotic and sufficient conditions to be a very chaotic functions ...
Baghdad Science Journal
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