Answer score of 10 or more. This badge can be awarded multiple times.
earned this badge 7 times
Awarded jul 1 at 8:33
What is the large cardinal strength of the assertion that every $\kappa$-complete filter on $\kappa$ extends to a $\kappa$-complete ultrafilter?
Awarded jun 29 at 10:56
Is there a “large powerset axiom” so extreme that it disproves the existence of strongly inaccessible cardinals?
Awarded jun 12 at 7:54
Awarded may 5 at 17:00
Does every set of reals contain a measure-zero set of the same cardinality? Does it contain a meager set of the same cardinality?
Awarded oct 12 '13 at 18:58
Awarded sep 29 '13 at 17:18
Awarded sep 15 '13 at 21:41