1. Andrzej Roslanowski & Saharon Shelah (2008). Generating Ultrafilters in a Reasonable Way. Mathematical Logic Quarterly 54 (2):202-220.
    No categories
    Direct download (5 more)  
     
    My bibliography  
     
    Export citation  
  2. Tomek Bartoszyński, Andrzej Roslanowski & Saharon Shelah (2000). After All, There Are Some Inequalities Which Are Provable in ZFC. Journal of Symbolic Logic 65 (2):803-816.
    We address ZFC inequalities between some cardinal invariants of the continuum, which turned out to be true in spite of strong expectations given by [11].
    Direct download (5 more)  
     
    My bibliography  
     
    Export citation  
  3. Marek Balcerzak, Andrzej Roslanowski & Saharon Shelah (1998). Ideals Without CCC. Journal of Symbolic Logic 63 (1):128-148.
    Let I be an ideal of subsets of a Polish space X, containing all singletons and possessing a Borel basis. Assuming that I does not satisfy ccc, we consider the following conditions (B), (M) and (D). Condition (B) states that there is a disjoint family F $\subseteq$ P(X) of size c, consisting of Borel sets which are not in I. Condition (M) states that there is a Borel function f: X → X with $f^{-1}[\{x\}] \not\in$ I for each x ∈ (...)
    Direct download (6 more)  
     
    My bibliography  
     
    Export citation