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JSYML
2008
82views more  JSYML 2008»
13 years 11 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 11 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