{ "id": "1011.3217", "version": "v1", "published": "2010-11-14T11:34:01.000Z", "updated": "2010-11-14T11:34:01.000Z", "title": "Looking for a Billiard Table which is not a Lattice Polygon but Satisfies Veech's Dichotomy", "authors": [ "Meital Cohen" ], "categories": [ "math.DS" ], "abstract": "Over the course of studying billiard dynamics, several questions were raised. One of the questions was, which surfaces satisfy the following property (which is called Veech's dichotomy): Any direction is either completely periodic or uniquely ergodic. In an important paper Veech gave a sufficient condition for this dichotomy. He showed that if the stabilizer of a translation surface is a lattice in $SL_2(\\R)$, then the surface satisfies Veech's dichotomy. Later, Smillie and Weiss proved that this condition is not necessary. They constructed a translation surface which satisfies Veech's dichotomy but is not a lattice surface. Their construction was based on previous work of Hubert and Schmidt, by taking a branched cover over a lattice surface, where the branch locus is a single non-periodic connection point. In this work we tried to answer the following question: Is there a flat structure obtained from a billiard table that satisfies Veech's dichotomy, but its Veech group is not a lattice? We prove that in the entire list of possible candidates for such a construction, an example does not exist.", "revisions": [ { "version": "v1", "updated": "2010-11-14T11:34:01.000Z" } ], "analyses": { "keywords": [ "lattice polygon", "billiard table", "lattice surface", "single non-periodic connection point", "translation surface" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010arXiv1011.3217C" } } }