Evolution of the temperature-density profile of a rotating (A) and non-rotating (B) WD with 0.54 M_⊙ accretion rate is 5 × 10^-8M_⊙/ yr, f_acc = 1.0 and log (L_init/L_⊙) = −1. Blue dots indicate the core-envelope interface. Initial (at the beginning of mass accretion) and final (at the point of helium ignition) profiles are indicated. The given masses (left to right) correspond to the presented profiles (initial to final). We note that the profiles marked as “initial” are not the first models in their evolutionary sequence, having been evolved for about one kyr each.