Given a relation $R$ on a set $S$, we say two elements $a, b$ of $S$ are incomparable if neither of the relations $R(a, b)$ and $R(b, a)$ holds. Otherwise, the two elements are comparable.

Comparability is important in the theory of partially ordered sets.

This article is a stub. Help us out by expanding it.

Invalid username
Login to AoPS