{ "id": "0807.2500", "version": "v1", "published": "2008-07-16T05:51:08.000Z", "updated": "2008-07-16T05:51:08.000Z", "title": "The fine intersection problem for Steiner triple systems", "authors": [ "Yeow Meng Chee", "Alan C. H. Ling", "Hao Shen" ], "comment": "9 pages", "doi": "10.1007/s00373-006-0690-z", "categories": [ "math.CO" ], "abstract": "The intersection of two Steiner triple systems (X,A) and (X,B) is the set A intersect B. The fine intersection problem for Steiner triple systems is to determine for each v, the set I(v), consisting of all possible pairs (m,n) such that there exist two Steiner triple systems of order v whose intersection has n blocks over m points. We show that for v = 1 or 3 (mod 6), |I(v)| = Omega(v^3), where previous results only imply that |I(v)| = Omega(v^2).", "revisions": [ { "version": "v1", "updated": "2008-07-16T05:51:08.000Z" } ], "analyses": { "subjects": [ "05B05" ], "keywords": [ "steiner triple systems", "fine intersection problem" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2008arXiv0807.2500M" } } }