The Existence of n Symmetric Positive Solutions to A Fourth-Order Two-Point Boundary Value Problem
Applying of the monotone iterative technique,the existence of positive solutions to the fourth-order boundary value problem is studied:u(4)(t)=f(u(t))(t?[0,1]),u(0)=u(1)=0,u"(0)=u"(1)=0.The above boundary value problem has n symmetric positive solutions under certain conditions.
fourth-order boundary value problemGreen's functionmonotone iterative techniquesymmetric posi-tive solutions