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Timeline for functional subrings

Current License: CC BY-SA 3.0

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Aug 29, 2012 at 14:54 history edited jbc CC BY-SA 3.0
corrected a typo---$X$ for $Y$.
Aug 29, 2012 at 11:09 comment added Ali Reza Dear jbc. Thank you so much for your nice and simple construction, from your answer for part 1 of my Question, we could deduce that if the condition of part 2 occurs, then $X$ should be real compact. but it also remains to approach to the compactness of it. Best wishes
Aug 29, 2012 at 10:05 history answered jbc CC BY-SA 3.0