| In this paper,we stndy the boundary value problems for n order retarded functional differential equations: x(n)(t)=f(t,xt,x(t),x′(t),…,x(n-1)(t)), t∈［0，T ］,x(t)=φ(t),t∈［-r,0］;x′(0)=η,x″(0)=η2,…,x(n-2) (0)=ηn-2,x(j)(T)=A, where j∈I={0,1,2,…,n-1}, some new results for existence and uniqueness are obtained. |
