11 citations · 28 across the 15 of their papers we have counts for
15 papers
A collection of abstracts of Shelah's Papers
Saharon Shelah
These are abstracts of most of the papers up to publication no. [Sh:143] (and [Sh:217]), mostly compiled in 1980/81 with R. Grossberg. Also more details than in the originals were…
Kurepa trees and the failure of the Galvin property
Tom Benhamou, Shimon Garti, Saharon Shelah
We force the existence of a non-trivial -complete ultrafilter over which fails to satisfy the Galvin property. This answers a question asked by the first author and Moti Git…
Usuba's principle can fail at singular cardinals
Mohammad Golshani, Saharon Shelah
We answer a question of Usuba by showing that the combinatorial principle can fail at a singular cardinal. Furthermore, can be taken to be
Another ordering of the ten cardinal characteristics in Cichoń's diagram
Jakob Kellner, Saharon Shelah, Anda Ramona Tanasie
It is consistent that \[ \aleph_1 < \mathrm{add}(\mathrm{Null}) < \mathrm{add}(\mathrm{Meager})= \mathfrak{b} < \mathrm{cov}(\mathrm{Null}) < \mathrm{non}(\mathrm{Meager}) < \mathr…
On partial orderings having precalibre- and fragments of Martin's axiom
Joan Bagaria, Saharon Shelah
We define a countable antichain condition (ccc) property for partial orderings, weaker than precalibre-, and show that Martin's axiom restricted to the class of partial o…
On the p-rank of Ext(A,B) for countable abelian groups A and B
Lutz Struengmann, Saharon Shelah
In this note we show that the p-rank of Ext(A,B) for countable torsion-free abelian groups A and B is either countable or the size of the continuum.