scholarly journals On Schauder's fixed point theorem and forced second-order nonlinear oscillations

1968 ◽  
Vol 21 (2) ◽  
pp. 421-425 ◽  
Author(s):  
A.C Lazer
Keyword(s):  
Fixed Point ◽  
Fixed Point Theorem ◽  
Point Theorem ◽  
Nonlinear Oscillations ◽  
Second Order ◽  
Schauder’S Fixed Point Theorem ◽  
Schauder's Fixed Point Theorem

scholarly journals A Note on Periodic Solutions of Second Order Nonautonomous Singular Coupled Systems

2010 ◽  
Vol 2010 ◽  
pp. 1-15 ◽  
Author(s):  
Zhongwei Cao ◽  
Chengjun Yuan ◽  
Daqing Jiang ◽  
Xiaowei Wang
Keyword(s):  
Fixed Point ◽  
Fixed Point Theorem ◽  
Periodic Solutions ◽  
Point Theorem ◽  
Second Order ◽  
Coupled Systems ◽  
Schauder’S Fixed Point Theorem ◽  
Schauder's Fixed Point Theorem ◽  
Existence Of Periodic Solutions

We establish the existence of periodic solutions of the second order nonautonomous singular coupled systemsx′′+a1(t)x=f1(t,y(t))+e1(t)for a.e.t∈[0,T],y′′+a2(t)y=f2(t,x(t))+e2(t)for a.e.t∈[0,T]. The proof relies on Schauder's fixed point theorem.

scholarly journals PERIODIC SOLUTIONS OF SINGULAR DIFFERENTIAL EQUATIONS WITH SIGN-CHANGING POTENTIAL

2010 ◽  
Vol 82 (3) ◽  
pp. 437-445 ◽  
Author(s):  
JIFENG CHU ◽  
ZIHENG ZHANG
Keyword(s):  
Fixed Point ◽  
Fixed Point Theorem ◽  
Differential Equations ◽  
Periodic Solutions ◽  
Point Theorem ◽  
Second Order ◽  
Schauder’S Fixed Point Theorem ◽  
Positive Periodic Solutions ◽  
Singular Differential Equations ◽  
Attractive Case

AbstractIn this paper we study the existence of positive periodic solutions to second-order singular differential equations with the sign-changing potential. Both the repulsive case and the attractive case are studied. The proof is based on Schauder’s fixed point theorem. Recent results in the literature are generalized and significantly improved.

scholarly journals A Periodic Solution of the Generalized Forced Liénard Equation

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Zahra Goodarzi ◽  
Abdolrahman Razani
Keyword(s):  
Periodic Solution ◽  
Fixed Point ◽  
Fixed Point Theorem ◽  
Point Theorem ◽  
Liénard Equation ◽  
Schauder’S Fixed Point Theorem ◽  
Schauder's Fixed Point Theorem ◽  
Lienard Equation

We consider the generalized forced Liénard equation as follows:(ϕp(x′))′+(f(x)+k(x)x′)x′+g(x)=p(t)+s. By applying Schauder's fixed point theorem, the existence of at least one periodic solution of this equation is proved.

scholarly journals Positive Solutions of a Singular Nonlocal Fractional Order Differential System via Schauder’s Fixed Point Theorem

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Xinguang Zhang ◽  
Cuiling Mao ◽  
Yonghong Wu ◽  
Hua Su
Keyword(s):  
Fixed Point ◽  
Fixed Point Theorem ◽  
Positive Solutions ◽  
Fractional Order ◽  
Differential System ◽  
Point Theorem ◽  
Schauder’S Fixed Point Theorem ◽  
Schauder's Fixed Point Theorem ◽  
Existence Of Positive Solutions ◽  
Two Parameters

We establish the existence of positive solutions to a class of singular nonlocal fractional order differential system depending on two parameters. Our methods are based on Schauder’s fixed point theorem.

ASYMPTOTIC EXPANSION FOR DIFFERENCE EQUATIONS WITH INFINITE DELAY

2009 ◽  
Vol 02 (01) ◽  
pp. 19-40
Author(s):  
Claudio Cuevas ◽  
Luis del Campo
Keyword(s):  
Fixed Point ◽  
Asymptotic Behavior ◽  
Asymptotic Expansion ◽  
Fixed Point Theorem ◽  
Point Theorem ◽  
Difference Equations ◽  
Infinite Delay ◽  
Schauder’S Fixed Point Theorem ◽  
Schauder's Fixed Point Theorem ◽  
Volterra Difference Equations

Using summable dichotomies and Schauder's fixed point theorem, we obtain existence, asymptotic behavior and compactness properties, of convergent solutions for difference equations with infinite delay. Applications on Volterra difference equations with infinite delay are shown.

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