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Feb 25, 2011 at 14:51 answer added Kevin O'Bryant timeline score: 3
Feb 17, 2011 at 10:14 comment added John Smith 1. The ultrafilter used in the ultraproduct is nonprincipal. 2. I haven't seen this claimed. I hypothesize that it is true but in order to be more accurate I change the question to "Is $(X,B,\mu)$ non separable?
Feb 17, 2011 at 3:44 comment added Joel David Hamkins You need to assume the ultrafilter used in the ultraproduct is nonprincipal.
Feb 17, 2011 at 1:19 comment added Yemon Choi As phrased, this sounds like an exercise you have been assigned; if not, could you please provide some more details about where you've seen the result claimed?
Feb 17, 2011 at 1:17 history asked John Smith CC BY-SA 2.5