Cabada, AlbertoGrossinho, Maria do RosárioMinhós, Feliz2023-04-212023-04-212003Cabada, Alberto, Maria do Rosário Grossinho and Feliz Minhós .(2003). “On the solvability of some discontinuous third order nonlinear differential equations with two point boundary conditions”. Journal of Mathematical Analysis and Applications, Vol. 285, No.1 : pp. 174-190.0022-247Xhttp://hdl.handle.net/10400.5/27653We prove the existence of extremal solutions for the third order discontinuous functional nonlinear problema … by using a fixed point theorem after having established some existence results for some auxiliary second order nonlinear problems. We observe that, together with the discontinuities allowed on the spacial variable u, with adequate modifications of technical type, analogous results can be obtained when the equation has a second member not necessarily continuous in u.engLower and Upper SolutionsThird-order Nonlinear Boundary Value ProblemsØ-Laplacian Problemjournal article10.10.16/S0022-247X(03)00388-3