What is it Like to be a Set? II
When I prepared my talk at Heidelberg, I noticed some errors and oddities in the paper I had written. There were also a few interesting points raised in the discussion which I wanted to address. So in Switzerland, I almost completely rewrote the paper. Here is the new version: "Emperors, dragons and other mathematicalia".
[Update 2004-12-31: I've corrected another mistake: condition (1) on singleton relations should say that they are injective functions, not just that they are functions.]