Author/Authors :
Shihua Chen، نويسنده , , Wei Ni، نويسنده , , Changping Wang، نويسنده ,
Abstract :
In this work, the authors consider the fourth order nonlinear ordinary differential equation
View the MathML sourceu(4)(t)=f(t,u(t)),0
Keywords :
upper and lower solution , positive solutions , Fixed point , Four-point boundary value problem
Journal title :
Applied Mathematics Letters
Journal title :
Applied Mathematics Letters