{ "id": "0705.3803", "version": "v2", "published": "2007-05-25T19:25:26.000Z", "updated": "2007-05-25T20:15:35.000Z", "title": "On implications in sectionally pseudocomplemented posets", "authors": [ "J\\{=}anis Cīrulis" ], "comment": "10 pages, no figures, typos corrected", "journal": "Acta Sci. Math. (Szeged) 74 (2008), 477--491", "categories": [ "math.LO" ], "abstract": "A sectionally pseudocomplemented poset P is one which has the top element and in which every principal order filter is a pseudocomplemented poset. The sectional pseudocomplements give rise to an implication-like operation on P which coincides with the relative pseudocomplementation if P is relatively psudocomplemented. We characterise this operation and study some elementary properties of upper semilattices, lower semilattices and lattices equipped with this kind of implication. We deal also with a few weaker versions of implication. Sectionally pseudocomplemented lattices have already been studied in the literature.", "revisions": [ { "version": "v2", "updated": "2007-05-25T20:15:35.000Z" } ], "analyses": { "subjects": [ "03G25", "06A12", "06D15", "06F35" ], "keywords": [ "sectionally pseudocomplemented poset", "implication", "principal order filter", "sectional pseudocomplements", "weaker versions" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 10, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2007arXiv0705.3803C" } } }