Llibre, Jaumeda Silva, Paulo R.Teixeira, Marco A.2014-05-202014-05-202007-06-01Journal of Dynamics and Differential Equations. New York: Springer, v. 19, n. 2, p. 309-331, 2007.1040-7294http://hdl.handle.net/11449/34214Singular perturbations problems in dimension three which are approximations of discontinuous vector fields are studied in this paper. The main result states that the regularization process developed by Sotomayor and Teixeira produces a singular problem for which the discontinuous set is a center manifold. Moreover, the definition of' sliding vector field coincides with the reduced problem of the corresponding singular problem for a class of vector fields.309-331engregularizationvector fieldssingular perturbationdiscontinuous vector fieldsArtigo10.1007/s10884-006-9057-7WOS:000247355000003Acesso restrito