Ademola, T. A.Arawomo, P. O.2023-03-202023-03-202014-030717-6279ui_art_ademola_on_2014Proyecciones Journal of Mathematics 33(1), pp. 101-122http://ir.library.ui.edu.ng/handle/123456789/8097In this article, Lyapunov second method is used to obtain criteria for uniform ultimate boundedness and asymptotic behaviour of solutions of nonlinear differential equations of the third order. The results obtained in this investigation include and extend some well known results on third order nonlinear differential equations in the literature.enThird orderDifferential equationsUniform ultimate boundednessAsymptotic behaviour of solutionsComplete Lyapunov functionOn the asymptotic behaviour of solutions of certain differential equations of the third orderArticle