Results 11 to 20 of about 1,108 (132)
Center conditions for a simple class of quintic systems [PDF]
International Journal of Mathematics and Mathematical Sciences, Volume 29, Issue 11, Page 625-632, 2002., 2001 We obtain center conditions for a $O$-symmetric system of degree 5 for which the origin is a uniformly isochronous singular point. In the revised paper some misprints are corrected in the reference list.Comment: 9 pages, 0 figures, LaTeX 2 ...
Evgenii P. Volokitin +1 more
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Veterinary Dermatology, Volume 31, Issue 6, Page 471-e126, December 2020., 2020 Background – Equine sarcoids are the most prevalent skin neoplasm in horses worldwide. Although several treatments are available, none are consistently effective and recurrence is common. Objectives – To evaluate the efficacy and safety of topical imiquimod 5% cream and Sanguinaria canadensis + zinc chloride for treatment of equine sarcoids and ...
Carina M. Pettersson +3 more
wiley +1 more source
Subharmonic Solutions of Indefinite Hamiltonian Systems via Rotation Numbers
Advanced Nonlinear Studies, 2021 We investigate the multiplicity of subharmonic solutions for indefinite planar Hamiltonian systems Jz′=∇H(t,z){Jz^{\prime}=\nabla H(t,z)} from a rotation number viewpoint.
Wang Shuang, Qian Dingbian
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The monotonicity of the apsidal angle using the theory of potential oscillators [PDF]
, 2017 In a central force system the angle between two successive passages of a body through pericenters is called the apsidal angle.
Rojas, David
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Nonautonomous Dynamical Systems, 2022 A non-autonomous discrete commensal symbiosis model with Hassell-Varley type functional response is proposed and studied in this paper. Sufficient conditions are obtained for the existence of positive periodic solution of the system.
Chen Shangming, Chong Yanbo, Chen Fengde
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Open Mathematics, 2021 This paper provides a uniqueness result for positive solutions of the Neumann and periodic boundary value problems associated with the ϕ-Laplacian equation (ϕ(u′))′+a(t)g(u)=0,(\phi \left(u^{\prime} ))^{\prime} +a\left(t)g\left(u)=0, where ϕ is a ...
Boscaggin Alberto +2 more
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Analysis of solutions for the fractional differential equation with Hadamard-type
Open Mathematics, 2023 We mainly consider the existence and stability results of the positive solutions for the fractional differential equation with Hadamard-type by applying fixed point theorems, if the nonlinearity may be continuous or singular.
Zhu Huijuan, Ru Yuanfang, Wang Fanglei
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Advances in Differential Equations, 2013 This paper is concerned with a class of high-order cellular neural networks (HCNNs) model with time-varying delays in the leakage terms. By using the Lyapunov functional method and differential inequality techniques, we establish sufficient conditions on
Aiping Zhang
semanticscholar +1 more source
On Chouikha's isochronicity criterion [PDF]
, 2012 Recently A.R.Chouikha gave a new characterization of isochronicity of center at the origin for the equation $x"+g(x)=0$, where $g$ is a real smooth function defined in some neighborhood of $0 \in \R$. We describe another proof of his characterization and
Strelcyn, Jean-Marie
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The Poincaré–Birkhoff Theorem for a Class of Degenerate Planar Hamiltonian Systems
Advanced Nonlinear Studies, 2021 In this paper, we investigate the problem of the existence and multiplicity of periodic solutions to the planar Hamiltonian system x′=-λα(t)f(y)x^{\prime}=-\lambda\alpha(t)f(y), y′=λβ(t)g(x)y^{\prime}=\lambda\beta(t)g(x), where α,β\alpha,\beta ...
López-Gómez Julián +2 more
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