Bouhmadi Lopez, MariamMarto, JoãoMorais, JoãoSilva, César M.2018-03-062018-03-212017-03-21Mariam Bouhmadi-López et al JCAP03(2017)042http://hdl.handle.net/10400.6/4611Dynamical system techniques are extremely useful to study cosmology. It turns out that in most of the cases, we deal with finite isolated fixed points corresponding to a given cosmological epoch. However, it is equally important to analyse the asymptotic behaviour of the universe. On this paper, we show how this can be carried out for 3-forms model. In fact, we show that there are fixed points at infinity mainly by introducing appropriate compactifications and defining a new time variable that washes away any potential divergence of the system. The richness of 3-form models allows us as well to identify normally hyperbolic non-isolated fixed points. We apply this analysis to three physically interesting situations: (i) a pre-inflationary era; (ii) an inflationary era; (iii) the late-time dark matter/dark energy epoch.engCosmologyDynamical systemjournal article10.1088/1475-7516/2017/03/042