On the symmetric positive solutions of nonlinear fourth order ordinary differential equations with four-point boundary value conditions: a fixed point theory approach

Volume 13, Issue 6, pp 364--377 http://dx.doi.org/10.22436/jnsa.013.06.06
Publication Date: April 24, 2020 Submission Date: October 20, 2018 Revision Date: February 07, 2020 Accteptance Date: March 03, 2020

Authors

Md. Asaduzzaman - Department of Mathematics, Islamic University, Kushtia-7003, Bangladesh. Md. Zulfikar Ali - Department of Mathematics, University of Rajshahi, Rajshahi-6205, Bangladesh.


Abstract

The purpose of this paper is to investigate the existence of symmetric positive solutions of the following nonlinear fourth order system of ordinary differential equations \[ \begin{cases} -u^{(4)}(t) = f(t,\, v),\\ -v^{(4)}(t) = g(t,\, u) , \,\,\,t\in[0,\,1], \end{cases} \] with the four-point boundary value conditions \[ \begin{cases} u(t) = u(1-t),\,\, u^{\prime\prime\prime}(0)-u^{\prime\prime\prime}(1)=u^{\prime\prime}(t_{1})+u^{\prime\prime}(t_{2}),\\ v(t) = v(1-t),\,\, v^{\prime\prime\prime}(0)-v^{\prime\prime\prime}(1)=v^{\prime\prime}(t_{1})+v^{\prime\prime}(t_{2}), \,\,\,0<t_{1}<t_{2}<1. \end{cases} \] By applying Krasnoselskii's fixed point theorem and under suitable conditions, we establish the existence of at least one or at least two symmetric positive solutions of the above mentioned fourth order four-point boundary value problem in cone. Some particular examples are provided to support the analytic proof.


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ISRP Style

Md. Asaduzzaman, Md. Zulfikar Ali, On the symmetric positive solutions of nonlinear fourth order ordinary differential equations with four-point boundary value conditions: a fixed point theory approach, Journal of Nonlinear Sciences and Applications, 13 (2020), no. 6, 364--377

AMA Style

Asaduzzaman Md., Ali Md. Zulfikar, On the symmetric positive solutions of nonlinear fourth order ordinary differential equations with four-point boundary value conditions: a fixed point theory approach. J. Nonlinear Sci. Appl. (2020); 13(6):364--377

Chicago/Turabian Style

Asaduzzaman, Md., Ali, Md. Zulfikar. "On the symmetric positive solutions of nonlinear fourth order ordinary differential equations with four-point boundary value conditions: a fixed point theory approach." Journal of Nonlinear Sciences and Applications, 13, no. 6 (2020): 364--377


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