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In complex analysis, what does $z \in \overline{\mathbb{C}^-}$

Is it saying that the conjugate of all complex numbers whos imaginary part is negative?

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Where did you encounter this? –  Cameron Buie Mar 22 '13 at 22:23
    
Complex analysis looking at poles. –  calcnoob Mar 22 '13 at 22:24
    
Could you quote some more of the exact context you found this in? Is there a definition of $\mathbb C^-$ in scope? –  Henning Makholm Mar 22 '13 at 22:25
    
It is on online notes looking at the roots of unique Pade approximation to $e^z$ –  calcnoob Mar 22 '13 at 22:27
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What notes?${}{}{}$ –  Alexander Gruber Mar 22 '13 at 22:39
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