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JSYML
2008
82views more  JSYML 2008»
13 years 4 months ago
The number of openly generated Boolean algebras
This article is devoted to two different generalizations of projective Boolean algebras: openly generated Boolean algebras and tightly -filtered Boolean algebras. We show that for ...
Stefan Geschke, Saharon Shelah
AML
2008
74views more  AML 2008»
13 years 4 months ago
Homogeneous iteration and measure one covering relative to HOD
Relative to a hyperstrong cardinal, it is consistent that measure one covering fails relative to HOD. In fact it is consistent that there is a superstrong cardinal and for every re...
Natasha Dobrinen, Sy D. Friedman