Iterated forcing and normal ideals onω 1

1987 ◽  
Vol 60 (3) ◽  
pp. 345-380 ◽  
Author(s):  
Saharon Shelah
1978 ◽  
Vol 69 (2) ◽  
pp. 314 ◽  
Author(s):  
Judy Roitman
Keyword(s):  

2007 ◽  
Vol 5 ◽  
Author(s):  
Paul Corazza

We develop the machinery for performing forcing over an arbitrary (possibly non-wellfounded) model of set theory. For consistency results, this machinery is unnecessary since such results can always be legitimately obtained by assuming that the ground model is (countable) transitive. However, for establishing properties of a given (possibly non-wellfounded) model, the fully developed machinery of forcing as a means to produce new related models can be useful. We develop forcing through iterated forcing, paralleling the standard steps of presentation found in [19] and [14].


2020 ◽  
Author(s):  
S. G. Karpagavalli ◽  
T. Sangeetha
Keyword(s):  

1987 ◽  
Vol 29 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Saharon Shelah
Keyword(s):  

Author(s):  
Todd Eisworth ◽  
Justin Tatch Moore ◽  
David Milovich

1999 ◽  
Vol 64 (4) ◽  
pp. 1527-1551 ◽  
Author(s):  
Moti Gitik ◽  
Saharon Shelah

AbstractWe give some general criteria, when κ-complete forcing preserves largeness properties—like κ-presaturation of normal ideals on λ (even when they concentrate on small cofinalities). Then we quite accurately obtain the consistency strength “NSλ is αi-preserving”, for λ > α2.


Sign in / Sign up

Export Citation Format

Share Document