Mathematica 9 is now available
Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2008

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Unprotect[Pi]

  • To: mathgroup at smc.vnet.net
  • Subject: [mg90848] Re: Unprotect[Pi]
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
  • Date: Sat, 26 Jul 2008 04:21:23 -0400 (EDT)
  • Organization: The Open University, Milton Keynes, UK
  • References: <g6c99d$bu2$1@smc.vnet.net>

Scott wrote:

> How does one unprotect symbol Pi and the Greek lower case letter pi
> (&#960;)?  Unprotect[Pi] doesn't seem to do the job.
> 
> Pi // N
> 3.14159
> Unprotect[Pi]
> {Pi}
> Pi
> &#960;
> Pi // N
> 3.14159
> Unprotect[&#960;]
> &#960;//N
> 3.14159

I am not sure to have grasped what your try to achieve, but Unprotect[] 
works fine on my system. The following redefines the value of Pi to the 
nonsensical complex number 3 - I

     In[1]:= Unprotect[Pi];
             Pi = 3 - I;
             Protect[Pi];
             Pi

     Out[4]= 3 - I

Regards,
-- Jean-Marc


  • Prev by Date: Re: Cos[a x - b] displayed as Cos[b - a x]
  • Next by Date: Re: Export into Excel Worksheets
  • Previous by thread: Unprotect[Pi]
  • Next by thread: Re: Unprotect[Pi]