{ "id": "math/0210339", "version": "v1", "published": "2002-10-22T10:13:11.000Z", "updated": "2002-10-22T10:13:11.000Z", "title": "Families of trees decompose the random graph in any arbitrary way", "authors": [ "Raphael Yuster" ], "comment": "20 pages", "categories": [ "math.CO" ], "abstract": "Let $F=\\{H_1,...,H_k\\}$ be a family of graphs. A graph $G$ with $m$ edges is called {\\em totally $F$-decomposable} if for {\\em every} linear combination of the form $\\alpha_1 e(H_1) + ... + \\alpha_k e(H_k) = m$ where each $\\alpha_i$ is a nonnegative integer, there is a coloring of the edges of $G$ with $\\alpha_1+...+\\alpha_k$ colors such that exactly $\\alpha_i$ color classes induce each a copy of $H_i$, for $i=1,...,k$. We prove that if $F$ is any fixed family of trees then $\\log n/n$ is a sharp threshold function for the property that the random graph $G(n,p)$ is totally $F$-decomposable. In particular, if $H$ is a tree, then $\\log n/n$ is a sharp threshold function for the property that $G(n,p)$ contains $\\lfloor e(G)/e(H) \\rfloor$ edge-disjoint copies of $H$.", "revisions": [ { "version": "v1", "updated": "2002-10-22T10:13:11.000Z" } ], "analyses": { "subjects": [ "05C80" ], "keywords": [ "random graph", "trees decompose", "arbitrary way", "sharp threshold function", "color classes induce" ], "note": { "typesetting": "TeX", "pages": 20, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2002math.....10339Y" } } }