{ "id": "math/0302239", "version": "v1", "published": "2003-02-19T18:54:16.000Z", "updated": "2003-02-19T18:54:16.000Z", "title": "Limits in Function Spaces and Compact Groups", "authors": [ "Joan E. Hart", "Kenneth Kunen" ], "comment": "16 pages", "categories": [ "math.GN" ], "abstract": "If B is an infinite subset of omega and X is a topological group, let C^X_B be the set of all x in X such that converges to 1. If F is a filter of infinite sets, let D^X_F be the union of all the C^X_B for B in F. The C^X_B and D^X_F are subgroups of X when X is abelian. In the circle group T, it is known that C^X_B always has measure 0. We show that there is a filter F such that D^T_F has measure 0 but is not contained in any C^X_B. There is another filter G such that D^X_G = T. We also describe the relationship between D^T_F and the D^X_F for arbitrary compact groups X.", "revisions": [ { "version": "v1", "updated": "2003-02-19T18:54:16.000Z" } ], "analyses": { "subjects": [ "54H11", "22C05" ], "keywords": [ "function spaces", "arbitrary compact groups", "infinite subset", "infinite sets", "circle group" ], "note": { "typesetting": "TeX", "pages": 16, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2003math......2239H" } } }