Singularities in Inflationary Cosmological Models

Due to the accelerated expansion of universe, possibility formation singularities has changed from classical Big Bang and Crunch include a number new scenarios. In recent papers it been shown that such may appear in inflationary cosmological models with fractional power scalar field potential. this paper we enlarge analysis by use generalised expansions their Hubble order describe all possible leading singularity, finding other cases. Unless negative potential is considered, are weak type IV.