%0 Journal Article %T Uniformly convergent schemes for singularly perturbed differential equations based on collocation methods %A Dialla Konate %J International Journal of Mathematics and Mathematical Sciences %D 2000 %I Hindawi Publishing Corporation %R 10.1155/s0161171200000910 %X It is well known that a polynomial-based approximation schemeapplied to a singularly perturbed equation is not uniformlyconvergent over the geometric domain of study. Such scheme resultsin a numerical solution, say σ which suffers from severeinaccuracies particularly in the boundary layer. What we say in thecurrent paper is this: when one uses a grid which is not “toocoarse” the resulted solution, even being nonuniformly convergentmay be used in an iterated scheme to get a “good” approximationsolution that is uniformly convergent over the whole geometricdomain of study. %U http://www.hindawi.com/journals/ijmms/2000/151950/abs/