
theorem Th6:
  for z,w be G_INTEG holds g_int_mult.(z,w) = z*w
  proof
    let z, w be G_INTEG;
    z in G_INT_SET & w in G_INT_SET;
    hence g_int_mult.(z,w) = multcomplex.(z,w) by FUNCT_1:49,ZFMISC_1:87
    .= z*w by BINOP_2:def 5;
  end;
