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Mar 12, 2016 at 20:41 vote accept A random mathematician
Mar 12, 2016 at 9:19 answer added Fedor Petrov timeline score: 2
Mar 12, 2016 at 8:15 comment added A random mathematician Yes, I revised the question.
Mar 12, 2016 at 8:15 history edited A random mathematician CC BY-SA 3.0
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Mar 12, 2016 at 5:14 comment added Alexandre Eremenko What is $u$? Is $y=u$?
Mar 12, 2016 at 2:08 history asked A random mathematician CC BY-SA 3.0