Existence of positive periodic solution of a periodic cooperative model with delays and impulses [PDF]
International Journal of Mathematics and Mathematical Sciences, 2006 Sufficient conditions are obtained for the existence of at least one positive periodic solution of a periodic cooperative model with delays and impulses by using Mawhin's continuation theorem of coincidence degree theory.
Yongkun Li, Wenya Xing
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Positive Periodic Solution for Neutral-Type Integral Differential Equation Arising in Epidemic Model
Mathematics, 2023 This paper is devoted to investigating a class of neutral-type integral differential equations arising in an epidemic model. By using Mawhin’s continuation theorem and the properties of neutral-type operators, we obtain the existence conditions for ...
Qing Yang +4 more
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Positive Periodic Solution for Second-Order Nonlinear Differential Equations with Variable Coefficients and Mixed Delays. [PDF]
Entropy (Basel), 2022 In this paper, we study two types of second-order nonlinear differential equations with variable coefficients and mixed delays. Based on Krasnoselskii’s fixed point theorem, the existence results of positive periodic solution are established.
Dai Z, Du B.
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Positive Periodic Solution for Pipe/Tank Flow Configurations with Friction
Mathematics, 2023 In this article, we study a periodic boundary value problem related to valveless pumping. The valveless pumping is described by the unidirectional flow of liquid in a system.
Haiqing Du, Xiaojing Wang, Bo Du
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Positive Periodic Solution for Second-Order Singular Semipositone Differential Equations [PDF]
Abstract and Applied Analysis, 2013 We study the existence of a positive periodic solution for second-order singular semipositone differential equation by a nonlinear alternative principle of Leray-Schauder.
Xiumei Xing
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Positive Almost Periodic Solution on a Nonlinear Differential Equation [PDF]
Mathematical Problems in Engineering, 2011 We study the following nonlinear equationdx(t)/dt=x(t)[a(t)-b(t)xα(t)-f(t,x(t))]+g(t), by using fixed point theorem, the sufficient conditions of the existence of a unique positive almost periodic solution for above system are obtained, by using the ...
Tian Li-xin, Ni Hua, Liu Xun
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Positive periodic solution for p-Laplacian neutral Rayleigh equation with singularity of attractive type. [PDF]
J Inequal Appl, 2018 In this paper, we consider a kind of p-Laplacian neutral Rayleigh equation with singularity of attractive type, (ϕp(u(t)−cu(t−δ))′)′+f(t,u′(t))+g(t,u(t))=e(t). $$\bigl(\phi_{p} \bigl(u(t)-cu(t-\delta) \bigr)' \bigr)'+f \bigl(t,u'(t) \bigr)+g \bigl(t, u(t)
Xin Y, Liu H, Cheng Z.
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Positive Periodic Solution of Second-Order Coupled Systems with Singularities [PDF]
Abstract and Applied Analysis, 2013 This paper establishes the existence of periodic solution for a kind of second-order singular nonautonomous coupled systems. Our approach is based on fixed point theorem in cones. Examples are given to illustrate the main result.
Tiantian Ma
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Positive solutions for nonlinear periodic problems
Positivity, 2008 We consider a nonlinear periodic problem driven by the scalar p-Laplacian and with a nonsmooth potential. Using the degree map for multivalued perturbations of (S)+-operators and the spectrum of a weighted eigenvalue problem for the scalar periodic p ...
Staicu, Vasile +5 more
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Periodicity of the Positive Solutions of a Fuzzy Max-Difference Equation [PDF]
Abstract and Applied Analysis, 2014 We investigate the periodic nature of the positive solutions of the fuzzy max-difference equation xn+1=maxAn/xn-m,xn-k,n=0,1,…, where k,m∈{1,2,…}, An is a periodic sequence of fuzzy numbers, and x-d,x-d+1,…,x0 are positive fuzzy numbers with d=m,k.
Qiuli He +4 more
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