{
  "id": "0709.2729",
  "version": "v1",
  "published": "2007-09-17T21:47:09.000Z",
  "updated": "2007-09-17T21:47:09.000Z",
  "title": "Polynomial Approximation and $ω^r_φ(f,t)$ Twenty Years Later",
  "authors": [
    "Z. Ditzian"
  ],
  "categories": [
    "math.CA",
    "math.FA"
  ],
  "abstract": "About twenty years ago the measure of smoothness $\\omega ^r_\\phi (f,t)$ was introduced and related to the rate of polynomial approximation. In this article we survey developments about this and related concepts since that time.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2007-09-17T21:47:09.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "41A10",
      "41A17",
      "41A25",
      "41A27",
      "41A30",
      "41A36",
      "41A40"
    ],
    "keywords": [
      "polynomial approximation",
      "survey developments",
      "smoothness"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2007arXiv0709.2729D"
    }
  }
}