{ "id": "1907.04416", "version": "v1", "published": "2019-07-09T21:09:52.000Z", "updated": "2019-07-09T21:09:52.000Z", "title": "Block-avoiding point sequencings of arbitrary length in Steiner triple systems", "authors": [ "Douglas R. Stinson", "Shannon Veitch" ], "categories": [ "math.CO", "cs.DM" ], "abstract": "An $\\ell$-good sequencing of an STS$(v)$ is a permutation of the points of the design such that no $\\ell$ consecutive points in this permutation contain a block of the design. We prove that, for every integer $\\ell \\geq 3$, there is an $\\ell$-good sequencing of any STS$(v)$ provided that $v$ is sufficiently large. We also prove some new nonexistence results for $\\ell$-good sequencings of STS$(v)$.", "revisions": [ { "version": "v1", "updated": "2019-07-09T21:09:52.000Z" } ], "analyses": { "subjects": [ "05B07" ], "keywords": [ "steiner triple systems", "block-avoiding point sequencings", "arbitrary length", "nonexistence results", "permutation contain" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }