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MathGroup Archive 2007

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Re: WhichRootOfUnity

  • To: mathgroup at smc.vnet.net
  • Subject: [mg73062] Re: WhichRootOfUnity
  • From: Artur <grafix at csl.pl>
  • Date: Wed, 31 Jan 2007 01:00:53 -0500 (EST)
  • References: <epnag3$de0$1@smc.vnet.net> <45BF3679.706@gmail.com>

Dear Jean-Marc,
We was obtained that same results on that same version of Mathematica 5.2
BEST WISHES
ARTUR


Dnia 30-01-2007 o 13:13:45 Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>  
napisa³(a):

> Artur wrote:
>> << NumberTheory`NumberTheoryFunctions`
>> WhichRootOfUnity[(-1 + I Sqrt[3])/2]
>>  Who knows how this function works because nothing happened when I  
>> executed  this procedure.
>>  ARTUR
>>
>
> Hi Artur,
>
> I do not know what's going on: I have tried the example given in the  
> online help and no output was returned.
> In[1]:=
> Needs["NumberTheory`NumberTheoryFunctions`"]
>
> In[2]:=
> ?WhichRootOfUnity
>
> "WhichRootOfUnity[a] returns {n,k} if a = Exp(2 Pi I k / n) for
> a (unique) pair of nonnegative coprime integers k and n with k<n,  
> otherwise returns unevaluated."
>
> In[3]:=
> WhichRootOfUnity[(1+I Sqrt[3])/2]
>
> In[4]:=
> $Version
>
> Out[4]=
> 5.2 for Microsoft Windows (June 20, 2005)
>
> Regards,
> Jean-Marc



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