{ "id": "math/0009090", "version": "v1", "published": "2000-09-08T14:27:17.000Z", "updated": "2000-09-08T14:27:17.000Z", "title": "On a construction of Friedman", "authors": [ "Jeffrey Shallit", "Ming-wei Wang" ], "categories": [ "math.CO" ], "abstract": "H. Friedman obtained remarkable results about the longest finite sequence $x$ such that for all $i \\not= j$ the word $x[i..2i]$ is not a subsequence of $x[j..2j]$. In this note we consider what happens when ``subsequence'' is replaced by ``subword''.", "revisions": [ { "version": "v1", "updated": "2000-09-08T14:27:17.000Z" } ], "analyses": { "subjects": [ "68R15" ], "keywords": [ "construction", "longest finite sequence", "subsequence" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2000math......9090S" } } }