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Mar 31, 2022 at 6:18 vote accept AgnostMystic
Mar 29, 2022 at 14:19 comment added AgnostMystic Thank you for your edifying comment.Valuable Advice noted!
Mar 29, 2022 at 13:59 comment added Iosif Pinelis Previous comment continued: Try not to use vague terms such as "general points"; use quantifiers "for all/any" and "there exist(s)" instead.
Mar 29, 2022 at 13:59 comment added Iosif Pinelis @sajjadveeri : You asked if for any $n$ points in the unit disk there is some $z$ in the unit disk with $f(z)=|z|$. My answer proves that this is not true; that is, for some $n$ points in the unit disk there is no $z$ in the unit disk with $f(z)=|z|$. If you had asked if for some $n$ points in the unit disk there is some $z$ in the unit disk with $f(z)=|z|$, then the answer would have trivially been yes -- by letting e.g. $z_j=0$ for all $j$ and then choosing $z=0$. I hope you can understand this logic.
Mar 29, 2022 at 13:36 comment added AgnostMystic @losif Pinels ,you have taken the points on the unit circle and not general points in the unit disc.Could you kindly clarify ?
Mar 29, 2022 at 5:19 history edited Iosif Pinelis CC BY-SA 4.0
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Mar 29, 2022 at 4:52 history edited Iosif Pinelis CC BY-SA 4.0
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Mar 28, 2022 at 17:41 history answered Iosif Pinelis CC BY-SA 4.0