Results 1 to 10 of about 1,382,450 (317)
Periodic Third-Order Problems with a Parameter [PDF]
Axioms, 2021 This work concerns with the solvability of third-order periodic fully problems with a weighted parameter, where the nonlinearity must verify only a local monotone condition and no periodic, coercivity or super or sublinearity restrictions are assumed, as
Feliz Minhós, Nuno Oliveira
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Periodic perturbations of non-conservative second order differential equations
Electronic Journal of Qualitative Theory of Differential Equations, 2002 Consider the Lienard system $u''+f(u) u'+g(u)=0$ with an isolated periodic solution. This paper concerns the behavior of periodic solutions of Lienard system under small periodic perturbations.
R. A. Chouikha
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Investigation for periodic and almost periodic solutions of first-order ordinary differential equations [PDF]
E3S Web of Conferences, 2023 Approaches to estimating for the number of periodic and almost periodic solutions of ordinary differential equations are considered. Conditions that allow determinating both the upper and lower bounds for these solutions are found.
Alferov G., Ivanov G., Korolev V.
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The Curled Up Dimension in Quasicrystals
Crystals, 2021 Most quasicrystals can be generated by the cut-and-project method from higher dimensional parent lattices. In doing so they lose the periodic order their parent lattice possess, replaced with aperiodic order, due to the irrationality of the projection ...
Fang Fang, Richard Clawson, Klee Irwin
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String periods in the order-preserving model [PDF]
Information and Computation, 2020 The order-preserving model (op-model, in short) was introduced quite recently but has already attracted significant attention because of its applications in data analysis. We introduce several types of periods in this setting (op-periods). Then we give algorithms to compute these periods in time $O(n)$, $O(n\log\log n)$, $O(n \log^2 \log n/\log \log ...
Wojciech Rytter +6 more
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Periodic review and continuous ordering [PDF]
European Journal of Operational Research, 2015 There exist many inventory control studies that consider either continuous review & continuous ordering, or periodic review & periodic ordering. Mixtures of the two are hardly ever studied. However, the model with periodic review and continuous ordering is highly relevant in practice, as information on the actual inventory level is not always ...
Dennis Prak, Ruud Teunter, Jan Riezebos
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MULTIPLICATIVE ORDER OF GAUSS PERIODS [PDF]
International Journal of Number Theory, 2010 We obtain a lower bound on the multiplicative order of Gauss periods which generate normal bases over finite fields. This bound improves the previous bound of von zur Gathen and Shparlinski.
Igor E. Shparlinski +2 more
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Periodic solutions of higher order systems [PDF]
Pacific Journal of Mathematics, 1979 where u, g, and / are Λ-vectors. We will establish the existence of T-periodic solutions to (1.1) for large classes of nonlinearities g and forcing terms /. In particular we include cases where g is bounded, sublinear, or superlinear in u9 with arbitrary growth in the other arguments of g in the latter case.
Peter W. Bates +3 more
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The Periodicity of Entire Functions with Finite Order [PDF]
Journal of Mathematics, 2021 This paper is concerned with the periodicity of entire functions with finite growth order, and some sufficient conditions are given. Let f is a transcendental entire function with finite growth order, zero is a Picard exceptional value of
Zhiguo Ren, Guoqiang Dang
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Weighted Fractional-Order Transform Based on Periodic Matrix
Mathematics, 2021 Tao et al. proposed the definition of the linear summation of fractional-order matrices based on the theory of Yeh and Pei. This definition was further extended and applied to image encryption. In this paper, we propose a reformulation of the definitions
Tieyu Zhao, Yingying Chi
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