Equation Icon  [ 1 1 ] ¯eαa = δba + -r2ab(u )aa (u ) − -r2Rba0c(u)Ωc + O (r3) eαb [ 2 2 ] + r(1 − ra Ωb )a (u) + 1r2˙a (u) + 1-r2R (u )Ωb + O (r3) eα. (11.8 ) b a 2 a 2 a0b0 0