Vorticity components shortly after the shell-crossing: comparison of LPT with the ballistic approximation with Vlasov runs for Q1D-3SIN. The 2D slices are the same as those shown in the top-left group of nine panels of Fig. 14, except that the slice changes from left to right and the vorticity component changes from top to bottom. Again, on each line of three panels, 2LPT (left panel) and 1OLPT (middle panel) are compared with simulation measurements (rightpanel).