 Thus, at small ξ oscillations of functions γ"ab" cease while function γ33 begins to increase at decreasing ξ.This is a Kasner mode and when γ33 is compared to γ"ab", the above approximation is not applicable.In order to check the compatibility of this analysis, BKL studied the equations formula_38 = 0, formula_155 = 0, and, calculating from them the components γ"a"3, confirmed that the inequality takes place.