 The Einstein equation takes the form
All its terms are to a second order for the large (at "t" → 0) quantity 1/"t".In the Einstein equations , terms of such order appear only from terms that are time-differentiated.If the components of "P"αβ do not include terms of order higher than 2, then

where indices "l", "m", "n" designate tensor components in the directions l, m, n. These equations together with give the expressions with powers that satisfy .