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May 20, 2010 at 17:19 comment added Simon Thomas Of course, we have been discussing this kind of problem. They seem quite hard ...
May 20, 2010 at 17:07 comment added Andrés E. Caicedo Hi Simon, Have you talked with Paul Larson about this question? With Jindra and Richard, he's been working on properties of the model $L({\mathbb R})[{\mathcal U}]$. I'm sure if he hasn't investigated this, he'll find the problem interesting.
May 20, 2010 at 16:21 vote accept Noah Stein
May 20, 2010 at 16:08 history edited Simon Thomas CC BY-SA 2.5
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May 20, 2010 at 15:26 history edited Simon Thomas CC BY-SA 2.5
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May 20, 2010 at 15:20 history answered Simon Thomas CC BY-SA 2.5