equation icon  g = -1 - 2ra _O_a - r2E* + O(r3/R3), (580) uu (a ) gua = -_O_a + r d b- _O_a_O_b ab - rwab_O_b + 2-r2(E* + B*) + O(r3/R3), (581) a 3 a a 1- 2 * * 3 3 gab = dab- _O_a_O_b - 3r (Eab + B ab) + O(r /R ), (582)