Table 2.

Several Limiting Constraints on the Information Relations, with Their Interpretations or Consequences

Constraint	Consequence
$I_{12}=0$	Independent segregation of loci implies linkage equilibrium
${\Delta }_3=0$	Pairwise dependencies only, Ω = I13 + I23; ${\Delta }_1=I_{23}-I_{12}$; ${\Delta }_2=I_{13}-I_{12}$
$I_{12}=I_{13}=I_{23}=0$	Three-way dependence only, Δ3 = Ω; Δ1 = Δ2 = Ω

Keep in mind that these rules apply strictly only to the discrete functions without noise.