nonbetweenness

From non- +‎ betweenness.

nonbetweenness (uncountable)

1. (mathematics) The condition of not being between two other objects (in position or value)
   • 2016, Ross Atkins, “Betweenness and Nonbetweenness”, in arXiv‎^[1]:

     The nonbetweenness function ${\displaystyle nbet(n)}$ is the minimum number of total orderings such that for any three distinct objects ${\displaystyle a}$, ${\displaystyle b}$ and ${\displaystyle c}$, there is an ordering in which ${\displaystyle b}$ is not between ${\displaystyle a}$ and ${\displaystyle c}$.