I might have asked this question on math.stackexchange but since it's (probably) quite simple and highly ML related I am asking here. Assume in a normalizing flow model we have the following forward transformation given. $$ f(z)= \begin{bmatrix} z_1 +2z_2\\ 3z_1 + 4z_2\\ z_3 - 2z_4 \\ 3z_3 -4z_4...