{ "id": "1505.01961", "version": "v1", "published": "2015-05-08T09:09:34.000Z", "updated": "2015-05-08T09:09:34.000Z", "title": "Some results on Dyck paths and Motzkin paths", "authors": [ "Stefano Capparelli", "Alberto Del Fra" ], "comment": "22 pages", "categories": [ "math.CO" ], "abstract": "We introduce an equivalence relation on the set of Dyck paths and some operations on them. We determine a formula for the cardinality of those equivalence classes and use this information to obtain a combinatorial formula for the number of Dyck and Motzkin paths of a fixed length.", "revisions": [ { "version": "v1", "updated": "2015-05-08T09:09:34.000Z" } ], "analyses": { "subjects": [ "05A15", "05A99" ], "keywords": [ "motzkin paths", "dyck paths", "equivalence relation", "combinatorial formula", "equivalence classes" ], "note": { "typesetting": "TeX", "pages": 22, "language": "en", "license": "arXiv", "status": "editable" } } }