Results 11 to 20 of about 948 (103)

Bifurcation in a G0 Model of Hematological Stem Cells With Delay

Abstract and Applied Analysis
JEL Classification: 34C25, 34K18 ...
Ma Suqi, S. J. Hogan
doaj   +2 more sources

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., 2002
We obtained center conditions for an O‐symmetric system of degree 5 for which the origin is a uniformly isochronous singular point.
Evgenii P. Volokitin
wiley   +8 more sources

Periodic and quasi-periodic solutions of a four-dimensional singular differential system describing the motion of vortices

Advances in Nonlinear Analysis, 2023
In this article, we consider a four-dimensional singular differential system that can describe the dynamics of configurations bearing a small number of vortices in atomic Bose-Einstein condensates.
Liang Zaitao, Li Shengjun, Li Xin
doaj   +1 more source

Subharmonic solutions for a class of predator-prey models with degenerate weights in periodic environments

Open Mathematics, 2023
This article deals with the existence, multiplicity, minimal complexity, and global structure of the subharmonic solutions to a class of planar Hamiltonian systems with periodic coefficients, being the classical predator-prey model of V.
López-Gómez Julián, Muñoz-Hernández Eduardo, Zanolin Fabio   +2 more
doaj   +1 more source

Topical treatment of equine sarcoids with imiquimod 5% cream or Sanguinaria canadensis and zinc chloride – an open prospective study

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, Hans Broström, Patrice Humblot, Kerstin E. Bergvall   +3 more
wiley   +1 more source

Periodic solutions for a differential inclusion problem involving the p(t)-Laplacian

Advances in Nonlinear Analysis, 2020
In the present paper, we consider the nonlinear periodic systems involving variable exponent driven by p(t)-Laplacian with a locally Lipschitz nonlinearity.
Chen Peng, Tang Xianhua
doaj   +1 more source

Well-Ordered and Non-Well-Ordered Lower and Upper Solutions for Periodic Planar Systems

Advanced Nonlinear Studies, 2021
The aim of this paper is to extend the theory of lower and upper solutions to the periodic problem associated with planar systems of differential equations.
Fonda Alessandro, Klun Giuliano, Sfecci Andrea   +2 more
doaj   +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 J⁢z′=∇⁡H⁢(t,z){Jz^{\prime}=\nabla H(t,z)} from a rotation number viewpoint.
Wang Shuang, Qian Dingbian
doaj   +1 more source

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
core   +2 more sources

Periodic solution of a discrete commensal symbiosis model with Hassell-Varley type functional response

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
doaj   +1 more source