Uniqueness of positive solutions for quasilinear boundary value problems Original Research Article

Sufficient conditions for the uniqueness of positive solutions of boundary value problems for quasilinear differential equations of the type (|u′|m−2u′)′ + f(t,u,u′)=0, m ⩾ 2 are established. These problems arise, for example, in the study of the m-Laplace equation in annular regions.