Results 1 to 10 of about 3,555,220 (221)
Critical Oscillation Constant for Difference Equations with Almost Periodic Coefficients
Abstract and Applied Analysis, 2012 We investigate a type of the Sturm-Liouville difference equations with almost periodic coefficients. We prove that there exists a constant, which is the borderline between the oscillation and the nonoscillation of these equations.
Petr Hasil, Michal Veselý
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International Journal of Differential Equations, 2017 We compute explicitly the oscillation constant for Euler type half-linear second-order differential equation having multi-different periodic coefficients.
Adil Misir, Banu Mermerkaya
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Oscillation of nonlinear impulsive differential equations with piecewise constant arguments
Electronic Journal of Qualitative Theory of Differential Equations, 2013 Existence and uniqueness of the solutions of a class of first order nonlinear impulsive differential equation with piecewise constant arguments is studied. Moreover, sufficient conditions for the oscillation of the solutions are obtained.
Fatma Karakoc +2 more
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Oscillation of a nonlinear impulsive differential equation system with piecewise constant argument
Advances in Difference Equations, 2018 We deal with a nonlinear impulsive differential equation system with piecewise constant argument. We prove the existence and uniqueness of a solution. Moreover, we obtain sufficient conditions for the oscillation of the solution.
Fatma Karakoc +2 more
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A light-fueled self-oscillator that senses force [PDF]
Communications MaterialsLight-responsive materials with intrinsic negative feedback enable self-oscillation in non-equilibrium states. Conventional systems rely on self-shadowing in bending modes but fail when shadowing is constrained.
Zixuan Deng +3 more
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Using Pantheon and DES supernova, baryon acoustic oscillation, and Hubble parameter data to constrain the Hubble constant, dark energy dynamics, and spatial curvature [PDF]
, 2021 We use Pantheon Type Ia supernova (SN Ia) apparent magnitude, DES-3yr binned SN Ia apparent magnitude, Hubble parameter, and baryon acoustic oscillation measurements to constrain six spatially flat and non-flat cosmological models.
Shulei Cao, Joseph Ryan, Bharat Ratra
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Oscillation criteria for linear difference equations with several variable delays [PDF]
Opuscula Mathematica, 2021 We obtain new sufficient criteria for the oscillation of all solutions of linear delay difference equations with several (variable) finite delays. Our results relax numerous well-known limes inferior-type oscillation criteria from the literature by ...
Vasileios Benekas +3 more
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Constants of Motion of the Harmonic Oscillator [PDF]
Mathematical Physics, Analysis and Geometry, 2020 We prove that Weyl quantization preserves constant of motion of the Harmonic Oscillator. We also prove that if $f$ is a classical constant of motion and $\mathfrak{Op}(f)$ is the corresponding operator, then $\mathfrak{Op}(f)$ maps the Schwartz class into itself and it defines an essentially selfadjoint operator on $L^2(\mathbb R^n)$. As a consequence,
Fabián Belmonte, Sebastián Cuéllar
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Relativistic oscillator of constant period [PDF]
Physical Review A, 1996 A relativistic oscillator whose period is independent of its energy is of great fundamental importance in both relativistic classical mechanics and relativistic quantum mechanics. In this work theoretical and computational investigations of such a constant period oscillator are reported, with emphasis on basic mathematical and physical properties of ...
Kim, JH +3 more
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AIMS Mathematics, 2022 In this paper, we study linear differential equations whose coefficients consist of products of powers of natural logarithm and very general continuous functions.
Petr Hasil, Michal Veselý
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