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Dec 11, 2012 at 1:23 comment added Xander Flood Unless I misunderstood, the asker was looking for a characterization of affine schemes among ringed spaces, not among schemes.
Feb 28, 2012 at 9:01 vote accept Christopher Townsend
Feb 28, 2012 at 9:01
Feb 23, 2012 at 14:26 history answered Martin Brandenburg CC BY-SA 3.0