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Re: Curl and Div problems

  • To: mathgroup at smc.vnet.net
  • Subject: [mg115558] Re: Curl and Div problems
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Fri, 14 Jan 2011 06:20:18 -0500 (EST)

Indeed, when I reported this business about the syntax coloring of Curl 
to Wolfram tech support, they responded quickly to point out it 
indicates shadowing (hence -- they did not explicitly say this -- it's 
not a bug).

The trouble is, before you load the VectorAnalysis package, Curl seems 
to have no meaning other than as a symbol:

   ?Curl
System`Curl

And if you search for Curl in the Documentation Center, you seem to get 
no item related to that name in the System context.

This is an annoyance, yet I don't see a wholly satisfactory resolution 
to it. Having Curl available in the System context means you can define 
your own definition for it.

On 1/13/2011 3:24 AM, Kevin J. McCann wrote:
> I also noticed this. It seems that Curl is defined in the basic
> Mathematica commands; hence, the red indicates that you have defined the
> function twice....



-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305


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