ternary relation
finitary relation in which the number of places in the relation is three
conditional independence
situations wherein an observation is irrelevant or redundant when evaluating the certainty of a hypothesis
partial cyclic order
ternary relation that is cyclic (if [𝑥,𝑦,𝑧] then [𝑧,𝑥,𝑦]), asymmetric (if [𝑥,𝑦,𝑧] then not [𝑧,𝑦,𝑥]) and transitive (if [𝑤,𝑥,𝑦] and [𝑤,𝑦,𝑧] then [𝑤,𝑥,𝑧])