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math.LO2004
Simple Complete Boolean Algebras
Thomas Jech, Saharon Shelah
For every regular cardinal kappa there exists a simple complete Boolean algebra with kappa generators.
math.LO2004★ 1 cited
A more general iterable condition ensuring aleph_1 is not collapsed
Saharon Shelah
In a self-contained way, we deal with revised countable support iterated forcing for the reals. We improve theorems on preservation of the property UP, weaker than semi proper, and…