{ "id": "2209.12765", "version": "v1", "published": "2022-09-26T15:13:28.000Z", "updated": "2022-09-26T15:13:28.000Z", "title": "Mather $β$-function for ellipses and rigidity", "authors": [ "Michael", "Bialy" ], "categories": [ "math.DS", "math.DG" ], "abstract": "The goal of the first part of this note is to get an explicit formula for rotation number and Mather $\\beta$-function for ellipse. This is done here with the help of non-standard generating function of billiard problem. In this way the derivation especially simple. In the second part we discuss application of Mather $\\beta$-function to rigidity problem.", "revisions": [ { "version": "v1", "updated": "2022-09-26T15:13:28.000Z" } ], "analyses": { "keywords": [ "rigidity problem", "explicit formula", "rotation number", "first part", "non-standard generating function" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }