Definition:Cut


 * Real Analysis
 * Cut: a set $\alpha$ of rational numbers is a cut $(1)$: it contains at least one but not all rational numbers; $(2)$: if $p \in \alpha$ and $q < p$ then $q \in \alpha$; $(3)$: $\alpha$ contains no greatest element


 * Graph Theory
 * Cut-Vertex
 * Cut Point
 * Vertex Cut
 * Edge Cut