Generalized power expansions in cosmology

Alejandro S. Jakubi
Department of Physics, F.C.E.N., University of Buenos Aires
Pabellon I, Ciudad Universitaria, 1428 Buenos Aires, Argentina
jakubi@df.uba.ar
http://www.df.uba.ar/~jakubi

An advance report is given on a recently introduced algorithm to obtain
generalized power asymptotic expansions of cosmological solutions of the
Einstein equations.  An implementation in Maple with improved tools for sorting
exponents is described.  Also it is shown how to apply the algorithm when the
evolution is determined by a system of nonlinear differential equations.