{ "id": "1207.3400", "version": "v1", "published": "2012-07-14T07:15:40.000Z", "updated": "2012-07-14T07:15:40.000Z", "title": "The Intersection problem for 2-(v; 5; 1) directed block designs", "authors": [ "Nasrin Soltankhah", "somaye ahmadi" ], "comment": "17 pages. To appear in Discrete Math", "categories": [ "math.CO" ], "abstract": "The intersection problem for a pair of 2-(v, 3, 1) directed designs and 2-(v, 4, 1) directed designs is solved by Fu in 1983 and by Mahmoodian and Soltankhah in 1996, respectively. In this paper we determine the intersection problem for 2-(v, 5, 1) directed designs.", "revisions": [ { "version": "v1", "updated": "2012-07-14T07:15:40.000Z" } ], "analyses": { "keywords": [ "intersection problem", "directed block designs", "directed designs", "mahmoodian" ], "note": { "typesetting": "TeX", "pages": 17, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1207.3400S" } } }