Results 21 to 30 of about 188,624 (266)
Miscellaneous Dynamic Equations [PDF]
Methods and Applications of Analysis, 2003 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Akin-Bohner, Elvan, Bohner, Martin
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New Criteria of Oscillation for Linear Sturm–Liouville Delay Noncanonical Dynamic Equations
Mathematics, 2023 In this work, we deduce a new criterion that guarantees the oscillation of solutions to linear Sturm–Liouville delay noncanonical dynamic equations; these results emulate the criteria of the Hille and Ohriska types for canonical dynamic equations, and ...
Taher S. Hassan +4 more
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Atmosphere, 2020 The dynamic and thermodynamic evolution of droplets, in a size range characterizing a cough, has been analysed using basic equations of motion and coupled to the evolution of a spherical cloud puff in which they are supposed to be expired.
Paolo Martano
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Simplification of Galactic Dynamic equations [PDF]
Symmetry, 2020 Most fully developed galaxies have vivid spiral structure, but the formation and evolution of spiral structure is still a mystery that is not fully understood in astrophysics. We find that the currently used equations of galactic dynamics contain some unreasonable components.
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Improved Hille Oscillation Criteria for Nonlinear Functional Dynamic Equations of Third-Order
Mathematics, 2022 This paper aims to improve Hille oscillation criteria for the third-order functional dynamic equation p2(ξ)ϕγ2p1ξϕγ1yΔ(ξ)ΔΔ+a(ξ)ϕγy(g(ξ))=0, on an above-unbounded time scale T. The obtained results improve related contributions reported in the literature
Taher S. Hassan +5 more
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A dynamical study of the Friedmann equations [PDF]
European Journal of Physics, 2001 Cosmology is an attracting subject for students but usually difficult to deal with if general relativity is not known. In this article, we first recall the Newtonian derivation of the Friedmann equations which govern the dynamics of our universe and discuss the validity of such a derivation.
Uzan, Jean-Philippe, Lehoucq, Roland
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Oscillation criteria for third-order functional half-linear dynamic equations
Advances in Difference Equations, 2017 In this paper, we study the third-order functional dynamic equation { r 2 ( t ) ϕ α 2 ( [ r 1 ( t ) ϕ α 1 ( x Δ ( t ) ) ] Δ ) } Δ + q ( t ) ϕ α ( x ( g ( t ) ) ) = 0 , $$ \bigl\{ r_{2}(t)\phi_{\alpha_{2}} \bigl( \bigl[ r_{1}(t) \phi _{\alpha _{1}} \bigl(
Taher S Hassan +2 more
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Symbolic dynamics of the Lorenz equations [PDF]
Chaos, Solitons & Fractals, 1996 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fang, Hai-Ping, Hao, Bai-Lin
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Forced oscillation of second-order superlinear dynamic equations on time scales
Electronic Journal of Qualitative Theory of Differential Equations, 2011 In this paper, by constructing a class of Philos type functions on time scales, we investigate the oscillation of the following second-order forced nonlinear dynamic equation $$x^{\Delta\Delta}(t)-p(t)|x(q(t))|^{\lambda-1}x(q(t))=e(t),\quad t\in\mathbb{T}
Yuangong Sun
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Structure of Non-Oscillatory Solutions for Second Order Dynamic Equations on Time Scales
Mathematics, 2019 In this paper, we make a detailed analysis of the structure of non-oscillatory solutions for second order superlinear and sublinear dynamic equations on time scales.
Yong Zhou, Bashir Ahmad, Ahmed Alsaedi
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