356137.fig.003
Figure 3: Matrices representing (a) the starting function 𝑓 1 ( 𝑋 ) = 𝑥 3 + 𝑥 2 𝑥 1 and (b) the function 𝑓 2 ( 𝑋 ) resulting from replacing each variable with the network 𝑥 3 𝑥 2 𝑥 1 .