Notes. For three different IMFs are indicated: in the first three columns, the number of stars in our simulation box (× 10⁷) for a binary fraction of 0 (all stars are single). The border mass below which all stars are considerd to be unevolved is 0.8 M_⊙. The numbers N_ev,upper come from taking γ_unev = −1. The resulting number of WDs with three different assumptions on the binary fraction (0, 0.5, or 1) are listed in the last three columns, with our standard assumptions on the SFH and WD cooling. For the top-heavy IMF, the first of the three lines lists the sum of the contributions from the Komiya and the Salpeter IMF, which are given in the second and third line.