Results 21 to 30 of about 9,489,153 (244)
A note on phase-lag computations for multiderivative methods for second order periodic initial value problems [PDF]
, 1985 Phase—lag computations are carried out for a family of two-step multiderivative methods for solving second order initial value problems of the form y" = f(t,y), y(t0) = y0, y'(t0) = z0.
Twizell, E H
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Discovering High-Order Periodic Patterns [PDF]
Knowledge and Information Systems, 2004 Discovery of periodic patterns in time series data has become an active research area with many applications. These patterns can be hierarchical in nature, where a higher-level pattern may consist of repetitions of lower-level patterns. Unfortunately, the presence of noise may prevent these higher-level patterns from being recognized in the sense that ...
Jiong Yang 0001 +2 more
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Periodic Ordered Permutation Groups and Cyclic Orderings
Journal of Combinatorial Theory, Series B, 1995 It is shown that periodic ordered permutation groups satisfying certain extra conditions are very nearly simple. This is applied to several natural examples, such as the following. (i) If \(z\) denotes the map \(x \mapsto x + 1\) on \(\mathbb{R}\), and \(\text{Diff}(\mathbb{R})\) is the group of diffeomorphisms of \(\mathbb{R}\), then \(C_{\text{Diff}(\
Manfred Droste +2 more
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Optimal periodic output feedback control: a continuous-time approach [PDF]
, 2007 : This paper addresses the problem of optimal static output feedback control of linear periodic systems. The proposed approach, which allows to deal with both stable and unstable open loop systems, relies on a continuous-time formulation of the control ...
VIGANO', LUCA +8 more
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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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A numerically reliable approach for the synthesis of periodic FDI filters [PDF]
, 2012 We propose an integrated numerically reliable computational approach to solve fault detection and isolation (FDI) problems for periodic systems. For this purpose, a bank of periodic fault detection filters providing a structured residual set is designed
Varga, Andreas
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Multiplicity of periodic solutions in bistable equations [PDF]
, 2006 We study the number of periodic solutions in two first-order non-autonomous differential equations, both of which have been used to describe, among other things, the mean magnetization of an Ising magnet in a time-varying external magnetic field.
Grinfeld, Michael, Berkolaiko, Gregory
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Essentially periodic ordered groups
Annals of Pure and Applied Logic, 2000 The authors introduce and study a number of notions extending that of an o-minimal group; i.e., they investigate totally ordered groups with certain restrictions on definable subsets. They also prove a number of interesting results relating the different notions. Some but not all of these notions are closed under elementary equivalence.
Françoise Point, Frank O. Wagner
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THE FOURTH ORDER MIXED PERIODIC RECURRENCE FRACTIONS
Journal of Vasyl Stefanyk Precarpathian National University, 2015 Offered economical algorithm for calculation of rational shortenings of thefourth-order mixed periodic recurrence fraction.
A.V. Semenchuk, R.A. Zatorsky
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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.
Bates, P. W., Ward, J. R.
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