文摘
In this paper, we investigate the solvability of nth-order Lipschitz equations \(y^{(n)}=f(x,y,y',\ldots,y^{(n-1)})\) , \(x_{1}\leq x\leq x_{3}\) , with nonlinear three-point boundary conditions of the form \(k(y(x_{2}),y'(x_{2}),\ldots,y^{(n-1)}(x_{2});y(x_{1}),y'(x_{1}),\ldots ,y^{(n-1)}(x_{1}))=0\) , \(g_{i}(y^{(i)}(x_{2}),y^{(i+1)}(x_{2}),\ldots,y^{(n-1)}(x_{2}))=0\) , \(i=0,1,\ldots,n-3\) , \(h(y(x_{2}),y'(x_{2}),\ldots,y^{(n-1)}(x_{2}); y(x_{3}),y'(x_{3}),\ldots ,y^{(n-1)}(x_{3}))=0\) , where \(n\geq3\) , \(x_{1} . By using the matching technique together with set-valued function theory, the existence and uniqueness of solutions for the problems are obtained. Meanwhile, as an application of our results, an example is given.