# Definition:Ordering/Strict vs. Weak

Some sources define an ordering as we on $\mathsf{Pr} \infty \mathsf{fWiki}$ define a strict ordering.
Hence, in contrast with such a strict ordering, the term weak ordering is often used in this context to mean what we define on $\mathsf{Pr} \infty \mathsf{fWiki}$ as an ordering.