{ "id": "1203.6807", "version": "v1", "published": "2012-03-30T13:19:33.000Z", "updated": "2012-03-30T13:19:33.000Z", "title": "Enumeration of saturated chains in Dyck lattices", "authors": [ "Luca Ferrari", "Emanuele Munarini" ], "comment": "9 pages", "categories": [ "math.CO", "cs.FL" ], "abstract": "We determine a general formula to compute the number of saturated chains in Dyck lattices, and we apply it to find the number of saturated chains of length 2 and 3. We also compute what we call the Hasse index (of order 2 and 3) of Dyck lattices, which is the ratio between the total number of saturated chains (of length 2 and 3) and the cardinality of the underlying poset.", "revisions": [ { "version": "v1", "updated": "2012-03-30T13:19:33.000Z" } ], "analyses": { "subjects": [ "05A15", "05A05", "06A07" ], "keywords": [ "saturated chains", "dyck lattices", "enumeration", "hasse index", "general formula" ], "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1203.6807F" } } }