|
|||||
|
|
Meeting infinitely many cells of a partition once |
|
| Authors: | Heike Mildenberger Otmar Spinas |
| Affiliation: | Mathematisches Institut der Universit?t Bonn, Beringstr.1, 53115 Bonn, Germany. e-mail: heike@math.uni-bonn.de, DE Humboldt Universit?t zu Berlin, Institut für Mathematik, Unter den Linden 6, D-10099 Berlin, Germany. e-mail: spinas@mathematik.hu-berlin.de, DE |
| Abstract: | We investigate several versions of a cardinal characteristic defined by Frankiewicz. Vojtáš showed , and Blass showed . We show that all the versions coincide and that is greater than or equal to the splitting number. We prove the consistency of and of . Received: 2 October 1996 / Revised version: 22 May 1997 |
| Keywords: | Mathematics Subject Classification (1991): 03E05 03E35 |
| 本文献已被 SpringerLink 等数据库收录！ | |