Comparison of the density from T-EoS, ρ^T, and the output density computed with the D-EoS, ρ^D. The composition used is that of pure silicon, $\overline{A}=28$ and $\overline{Z}=14$. White regions denote that ρ^D is very close to ρ^T. Blue regions indicate that ρ^D ≫ ρ^T. Shown are the same numbered zones as in Fig. 1 and the same hatched region. In dashed black is the internal (ρ(r),T(r)) structure of a 15 M_⊙ model at the onset of silicon core burning, computed using the DT-EoS and in magenta the same model using the D-EoS.