A relation $a < b$ of elements in $P$ is a covering relation if there exists no $c$ in $P$ such that $a < c < b$. The set of covering relations is the minimal list of relations in $P$ that describes all relations of $P$.
i1 : coveringRelations divisorPoset 12 o1 = {{1, 2}, {1, 3}, {2, 4}, {2, 6}, {3, 6}, {4, 12}, {6, 12}} o1 : List |
The object coveringRelations is a method function.