Results 281 to 290 of about 10,464,066 (302)

Non-Oscillation in Linear Delay Differential Systems

Advanced Materials Research, 2012
In this paper, we consider the non-oscillatory problems of linear delay differential systems of odd-dimension. Based upon the corresponding characteristic equations, we get some criteria for non-oscillation by utilizing the matrix measures.
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Non-oscillation of modified Euler type linear and half-linear differential equations

European Journal of Mathematics, 2022
J. Šišoláková
semanticscholar   +1 more source

Bifurcations in Non Oscillating Stars

1990
The equations of a polytropic gas sphere are studied from the point of view of similarity solutions and Quasi-Invariance transformations. Ordinary differential equations are obtained that generalize Emden’s equations. Critical points are seen to exist in most cases and lead to bifurcations in the density space.
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Non-oscillation criterion for Euler type half-linear difference equations with consequences in linear case

Acta Mathematica Hungarica, 2022
P. Hasil, M. Pospíšil, J. Šišoláková, M. Veselý   +3 more
semanticscholar   +1 more source

Monotonous property of non-oscillations of the damped Duffing’s equation

Chaos, Solitons & Fractals, 2006
This paper deals with the monotony property of the bounded nonoscillations for the damped Duffing equation \[ \ddot x+\delta\dot x-\mu x+ x^3= 0, \] where \(\delta\) is the damping coefficient. The author is interested in establishing analytic results.
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Non-oscillation Maximum Power Point Tracking algorithm for Photovoltaic applications

8th International Conference on Power Electronics - ECCE Asia, 2011
The Maximum Power Point Tracking (MPPT) is essential to the Photovoltaic (PV) system to obtain the maximum output power P MPP even under temperature and irradiance variations. Since the widely used perturb and observe (P&O) method requires a small but continuous power perturbation to determine the maximum power point (MPP), the operating power point ...
Sang-Kuen Ji, Hwan-Yong Kim, Sung-Soo Hong, Yong-Woo Kim, Sang-Kyoo Han   +4 more
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A deconvolution method for obtaining non-oscillating depth distributions

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1992
Many problems in solid state physics can be formulated as follows: find a solution ƒ(t) of an equation y(x) = K(x, t)∗ƒ(t); ∫baK(x, t)ƒ(t) dt, where a ≤ t ≤ b,c ≤ x ≤ d. y(x) is given and the kernel K(x, t) is non-negative. Without restrictions on a set of admissible functions ƒ(t) the problem has no stable solution.
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Riccati Transformation and Non-Oscillation Criterion for Half-Linear Difference Equations

Bulletin of the Malaysian Mathematical Sciences Society
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kōdai Fujimoto, Petr Hasil, Michal Veselý   +2 more
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Non-Oscillation of half-linear difference equations with asymptotically periodic coefficients

Acta Mathematica Hungarica, 2019
P. Hasil, J. Juranek, M. Veselý
semanticscholar   +1 more source

Oscillation and non-oscillation for second-order linear difference equations

Applied Mathematics and Computation, 2005
Oscillation and non-oscillation theorems are proved for the second-order linear difference equation \[ \Delta^2x_{n-1} + p_{n}x_{n} = 0 \] when \((p_{n})\) is a real nonnegative sequence. The main results are discrete analogues of some theorems of Wong for second order ordinary differential equations and generalize earlier results of Zhang and Zhou.
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