{ "id": "0806.2922", "version": "v1", "published": "2008-06-18T08:31:46.000Z", "updated": "2008-06-18T08:31:46.000Z", "title": "A Point is Normal for Almost All Maps $βx + α\\mod 1$ or Generalized $β$-Maps", "authors": [ "B. Faller", "C. -E. Pfister" ], "comment": "Latex, 16 pages", "journal": "Ergod. Th & Dynam. Sys. 29 (2009) 1529-1547", "categories": [ "math.DS" ], "abstract": "We consider the map $T_{\\alpha,\\beta}(x):= \\beta x + \\alpha \\mod 1$, which admits a unique probability measure of maximal entropy $\\mu_{\\alpha,\\beta}$. For $x \\in [0,1]$, we show that the orbit of $x$ is $\\mu_{\\alpha,\\beta}$-normal for almost all $(\\alpha,\\beta)\\in[0,1)\\times(1,\\infty)$ (Lebesgue measure). Nevertheless we construct analytic curves in $[0,1)\\times(1,\\infty)$ along them the orbit of $x=0$ is at most at one point $\\mu_{\\alpha,\\beta}$-normal. These curves are disjoint and they fill the set $[0,1)\\times(1,\\infty)$. We also study the generalized $\\beta$-maps (in particular the tent map). We show that the critical orbit $x=1$ is normal with respect to the measure of maximal entropy for almost all $\\beta$.", "revisions": [ { "version": "v1", "updated": "2008-06-18T08:31:46.000Z" } ], "analyses": { "subjects": [ "11K16", "37E05", "37B10" ], "keywords": [ "maximal entropy", "unique probability measure", "construct analytic curves", "lebesgue measure" ], "tags": [ "journal article" ], "note": { "typesetting": "LaTeX", "pages": 16, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2008arXiv0806.2922F" } } }