{ "id": "math/0406411", "version": "v1", "published": "2004-06-21T20:06:29.000Z", "updated": "2004-06-21T20:06:29.000Z", "title": "SPM Bulletin 9", "authors": [ "Boaz Tsaban" ], "comment": "8 pages", "categories": [ "math.GN", "math.CO", "math.LO" ], "abstract": "This is the ninth issue of this bulletin. CONTENTS: Proceedings of SPM Workshop; A brief remark on van der Waerden spaces; Complete ccc Boolean algebras, the order sequential topology, and a problem of von Neumann; Cardinal invariants p, t and h and real functions; A comment on p