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Jan 10, 2015 at 18:22 vote accept A random mathematician
Jan 10, 2015 at 17:55 answer added Deane Yang timeline score: 4
Jan 10, 2015 at 11:39 comment added Joonas Ilmavirta Can't you just take $u=\frac{\alpha}{\alpha^*}u^*$ if $\alpha^*\neq0$?
Jan 10, 2015 at 3:52 history asked A random mathematician CC BY-SA 3.0