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Re: How to calculate covariant derivative by Mathematica?
*To*: mathgroup at smc.vnet.net
*Subject*: [mg106816] Re: How to calculate covariant derivative by Mathematica?
*From*: Peter Breitfeld <phbrf at t-online.de>
*Date*: Sun, 24 Jan 2010 05:40:40 -0500 (EST)
*References*: <hjeq9u$fr1$1@smc.vnet.net>
Shen wrote:
> I need to calculate covariant derivative by Mathematica. I noticed
> that there is no such a function in Mathematica. Can we define such a
> funcation? I don't know how to do it. Who can tell me how to define
> and calculate covariant derivative with Mathematica?
>
I wrote a small package called brfART.m for calculations with tensors and
GRT stuff. It has a function to calculate covariant derivatives. You may
find it on <http://www.pbreitfeld.de/Download.html>
There is an introduction brfART-Bsp.nb too on this site.
Beware: Language is German.
--
_________________________________________________________________
Peter Breitfeld, Bad Saulgau, Germany -- http://www.pBreitfeld.de
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