Minimality over free monoid presentations
Ahmet Sinan Cevik, Kinkar Chandra Das, İsmail Naci Cangül · Hacettepe Journal of Mathematics and Statistics · 2014
As a continues study of the paper [4], in here, we first state and prove the p-Cockcroft property (or, equivalently, efficiency) for a presentation, say PE, of the semi-direct product of a free abelian monoid rank two by a finite cyclic monoid. Then, in a separate section, we present sufficient conditions on a special case for PE to be minimal whilst it is inefficient.