{ "id": "0905.1591", "version": "v2", "published": "2009-05-11T10:12:00.000Z", "updated": "2009-06-29T13:27:26.000Z", "title": "Veech groups, irrational billiards and stable abelian differentials", "authors": [ "Ferran Valdez" ], "comment": "8 pages, 2 figures", "categories": [ "math.DS", "math.DG" ], "abstract": "We describe Veech groups of flat surfaces arising from irrational angled polygonal billiards or irreducible stable abelian differentials. For irrational polygonal billiards, we prove that these groups are non-discrete subgroups of SO(2,R) and we calculate their rank.", "revisions": [ { "version": "v2", "updated": "2009-06-29T13:27:26.000Z" } ], "analyses": { "keywords": [ "veech groups", "irrational billiards", "irrational angled polygonal billiards", "irrational polygonal billiards", "irreducible stable abelian differentials" ], "note": { "typesetting": "TeX", "pages": 8, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2009arXiv0905.1591V" } } }