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;) edit
Yes, I always suspected that set theory originated from an underground movement of some sort. YohanN7 (talk) 12:22, 23 July 2009 (UTC)
- A set of set theorists. If two of them married they'd form a union. I guess these sort of relations imply a function. I wonder iff they would have many differences? - 114.76.227.0 (talk) 13:57, 5 May 2012 (UTC)