Locally Maximal Idempotent-Generated Subsemigroups of PO_n
Bo Jun Xu · Shuxue de shijian yu renshi · 2012
In this paper,the semigroup PO_n of all singular partial order-preserving transformations on a finite chain is studied.By analyzing the idempotent elements,the structures and classification of the locally maximal idempotent-generated subsemigroups of PO_n are obtained.