MEETING INFINITELY MANY CELLS OF A PARTITION ONCE

Authors
MILDENBERGER H SPINAS O
Citation
H. Mildenberger et O. Spinas, MEETING INFINITELY MANY CELLS OF A PARTITION ONCE, Archive for mathematical logic, 37(7), 1998, pp. 495-503
Citations number
5
Categorie Soggetti
Mathematics,Mathematics
Journal title
Archive for mathematical logic → ACNP
ISSN journal
09335846
Volume
37
Issue
7
Year of publication
1998
Pages
495 - 503
Database
ISI
SICI code
0933-5846(1998)37:7<495:MIMCOA>2.0.ZU;2-A
Abstract
We investigate several versions of a cardinal characteristic f defined by Frankiewicz. Vojtas showed b less than or equal to f, and Blass sh owed f less than or equal to min(partial derivative, unif(K)). We show that all the versions coincide and that f is greater than or equal to the splitting number. We prove the consistency of max(b,s) < f and of f < min(d, unif(K)).