{ "id": "1503.05075", "version": "v1", "published": "2015-03-17T14:38:12.000Z", "updated": "2015-03-17T14:38:12.000Z", "title": "Characterization of Pomonoids by Properties of Generators", "authors": [ "Setareh Irannezhad", "Ali Madanshekaf" ], "categories": [ "math.RT" ], "abstract": "The study of flatness properties of ordered monoids acting on posets was initiated by S.M. Fakhruddin in the 1980's. Although there exist many papers which investigate various properties of $S$-posets (posets equipped with a compatible right action of an ordered monoid $S$) from free to torsion free, among them generators, there seems to be known very little. In 2008, Laan characterized generators in the category {\\bf Pos}-$S$ of all $S$-posets with monotone action-preserving maps between them. His characterization is similar to the case of acts over monoids. We attempt here to collect the knowledge on generators in the category {\\bf Pos}-$S$ and to apply this to proceed on the questions of homological classification of ordered monoids, that is results of the type: all generators in the category {\\bf Pos}-$S$, satisfy a flatness property if and only if $S$ has a certain property.", "revisions": [ { "version": "v1", "updated": "2015-03-17T14:38:12.000Z" } ], "analyses": { "subjects": [ "20M50", "06F05" ], "keywords": [ "characterization", "ordered monoid", "flatness property", "monotone action-preserving maps", "compatible right action" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }