Left Distributivity: Two relations R1,R2 are called left distributive over a set S if:
∀x,y,z∈S:xR1(yR2z)=(AR1b)R2(AR1c)
Right Distributivity: Two relations R1,R2 are called right distributive over a set S if:
∀x,y,z∈S:(xR2y)R1z=(xR2z)R1(yR2z)