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MathGroup Archive 2003

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Re: Simplify[x.Cross[x,y]] does not work.

  • To: mathgroup at
  • Subject: [mg40092] Re: Simplify[x.Cross[x,y]] does not work.
  • From: Paul Abbott <paul at>
  • Date: Thu, 20 Mar 2003 03:32:47 -0500 (EST)
  • Organization: The University of Western Australia
  • References: <b599lq$s9r$>
  • Sender: owner-wri-mathgroup at

In article <b599lq$s9r$1 at>,
 Jens Bloch Helmers <Jens.Bloch.Helmers at> wrote:

> Is there a package that can do vector calculus?
> Eg. when I try the command: Simplify[x.Cross[x,y]]
> I get x.x cross y instead of 0.

At you will find reference to 
a Mathematica Symbolic Vector Analysis package developed by Hong Qin. I 
have made a  few minor changes to his Package (correcting some 
formatting bugs) and put his Package, Notebooks, and PDF files at

I suggest putting GeneralVectorAnalysis.m into a folder called Calculus 
in the directory returned by evaluating $UserAddOnsDirectory.


Paul Abbott                                   Phone: +61 8 9380 2734
School of Physics, M013                         Fax: +61 8 9380 1014
The University of Western Australia      (CRICOS Provider No 00126G)         
35 Stirling Highway
Crawley WA 6009                      mailto:paul at 

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